Animation : Cartoonist needed? by Sean Crayne

I have gotten in contact with a substantial network who says and I quote " Keep the story the story is great. But, it's all about the characters. Write a page for each of your characters because when they become real to you they will be the same for the viewers." I have written the backgrounds already and have sent them in. I'm now worried that my drawing concepts won't be enough. How can I get cartoonist to be on board with a substantial idea like this? I want professional looking work that can be valuable during a live pitch. Is there anyone out there who would be willing to help for next to nothing, except for the fact that you would be credited with the artistic work and if the show is picked up or "greenlit", would be able to take a cut from the profit? Please let me know, we are on a time constraint but we are in the middle of talking to the company now. Thank You.