Hi my name is Vince and I am an artist and writer. I have been keeping an eye on this site and others for a few months now and the reason I have not communicated with most is the fact that most posts have a pattern, which I will explain. Please excuse my bluntness, I 'm not trying to be rude or arrogant.... It's my personality to speak forward. I would like to thank you Ruyei for having the interest to understand artists needs and I respect you for it.
1) First off: To get this clear and out of the way (don't worry its painless) obviously payment is avoided in most posts relating to artists in most sites not only this one. But the thing about this is it shows the potential artist that the book is just an activity not a career pursuit. Allot of things regarding this is left out such as printing costs, distribution, and promotion costs etc. Who pays it? And most of all paying the artist with their share if the comic is sold to the public. Which allot of writer's offer in their collaboration pitch but stays off that subject when they are contacted.
2) Artist wants to be assured that their time will not be wasted. Their talents not belittled and they won't get the short end of the stick. When a pitch is made to a potential artist it is best to let the artist know about your plans and benefits (for yourself and the artist) as well as displaying your writing ability.
3) Some writers would not show their script unless contacted (which some artist don't care to do since it could of been posted) which tells us you are reclusive in your ideas and would be selfish in the creation process.
4) Rights- If you say you want a partnership, collaboration then that should mean they should get all rights to the story as well. Yet no one mentions this. If someone drew a comic for you and after it is published- who has the rights and benefits? posts always ignore this... If you both share then how will you distribute the money of the sales to your partners involved assuming they trust you.
5) Benefits for artists is key... if you don't have that in mind for the artist in any way - NO DEAL. Don't assume they have time to waste on something that benefits you. I am sometimes offended when some say do it because it's fun or because they will give you exposure or even publishing credits as if we were amateurs... We will get that regardless because we did the art for the book. Like my brother says (it's a given) What else you got? It bothers me when I read "my story, my ideas, my group." If you have partners- it's theirs as well unless you bought their half. If you want it all to be yours- either pay the participants or make a better deal. If not, then don't offer collaboration and just be honest and say I am looking for an artist to do my book for free but since it is, I am not picky on skill level, time or loyalty.
6) Expendability is another issue because if the artist creates character designs, page layouts etc. What happens to them if it does not work out between you both? Do you keep the artists designs to use in your story anyway even when that particular artist is no longer involved? If you split ways, don't you take your story with you? Basically, If your partnership discontinues then the project should as well and must restart afresh... Meaning that if I drew for your story and designed characters but things went sour in our partnership then I have the right to forbid use of my designs in the comic unless they were already published. That means when you find another artist they must create a different likeness of your characters not using anything that the other artist produced... ideas, concepts, likeness, and page layouts. You keep your work, they keep theirs unless you bought it or agreed upon. The story is still yours but the designs belongs to its creator. It is ripping the artist off if his or her work is being used without their consent. The artist also must respect the writer and must not use those characters for other stories.
7) Showing that you have connections (if any) can help your pitch because it will encourage the artist that you are putting effort to make contact in the business but it also assures them that the book has a chance.

Formality is too common in post -not all- but I see when I contact writers, they never give me their name or even try to get to know me. How can you be partners if you can't connect personally? That automatically shows me we won't last long because I'm not treated as a person. Since our communications are done remotely it is best to assure the other person your good intentions and prove it.
9) Giving your sample... displaying a one-page script is fine accompanied with a synopsis of your story.
Also if you want to create something new with the artist then please feel free to mention it. If you want to be affective-- be honest and say what you really want from the artist. Don't worry about people stealing your ideas. Most creative people have good memories and will spot a plagiarist pretty fast and not trust them.
If I missed anything or you have any questions please let me know. Best wishes!
NOTE;
Personality- show the artist you are not a stick in the mud or a stiff neck to work with. Have fun with it!
Considerate- not self-seeking but considers the artists benefit as well as yours.
Fairness- allow the artist to have creative freedom and offer equal benefits.
Talented- show that you are flexible, creative and inspired.
Offer- give some reason why they should work with you. Be honest, have personality, and get to the point.
Assertive - show that you are open to possibilities that will enhance both of you to be noticed by the public and are willing to put your share of the effort.
Assurance- show the artist that this project will not waste their time nor they are being taken advantage to get free services.
Respect- always show respect to other peoples work, time and efforts.
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Here is a small sample of a pitch a writer could give that might help. (The script is not mine, it's just for example)
Show energy, excitement, character, straight to the point information.
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SEEKING ARTISTS FOR NEW COMIC BOOK SENSATION!
LOOKING FOR.> PENCILERS, INKERS, COLORISTS, LETTERERS, PROMOTERS, CONNECTIONS etc.
STYLE> MARVEL or anything close
SKILL LEVEL> ANY ---no stick figures please!
BENEFIT> PAYMENT $50.00 PER PAGE BUDGET OR PARTNERSHIP ASK FOR MORE INFO
Hello artist out there! My name is.... I have an offer for those who are seeking collaboration with a writer who will put your creative skills to its limit! I look beyond the box (what box?)
Here's the deal... I would like to collaborate with an artist who is willing to create and produce with me the comic of all comics! The hero of all heroes! You will have full share with me of all rights and benefits.
Plan: We both work on the concept and characters together so this story will be yours as well as mine.
I'll write and promote through social media etc. You design characters and illustrate the pages. If this sounds good to you then email me and wow my mind with your samples! Here's a taste...
Credit to writers at
http://www.penciljack.com
PAGE ONE, Five Panels
Panel One: CU of fingers dialing on a cellphone
Panel Two: Fullshot of teenaged MJ walking down a flight of stairs leading into the subway. In the background we can see a couple walking up the stairs, heading for the surface. Other than that, she is alone and it’s night.
MJ: Mom? Uh, why aren’t you home? Ok, well I’m probably just talking to myself, but I had to stay late to help with inventory. I’m catching the last train out right now, so I should be home in about a half hour…
Panel Three: CU of MJ nervously waiting for the train, being careful not to stand anywhere near the edge. She’s watching a bum who is squatting down on the platform near the mouth of the subway tunnel, a bit worried by his behavior.
MJ:…sure would be nice if you met me at the station with the car. Hope everything’s-
Answering Machine: (over phone) BEEEP!
Panel Four: MS of MJ is closing her cellphone and pulling her coat tighter with the other hand. She is looking down at her feet, depressed. The bum is shuffling off up the stairs. From the tunnel, odd noises begin to erupt.
MJ: *sigh* Love you.
Sound: SCREECH, SCREECH
Panel Five: Low angle Medium LS of MJ stepping closer to the edge of the platform. Curiousity has taken hold.
MJ: …?