Hi, I like your project and the character, and I would like to work on it. Please have a look at my Portfolio (Link is under my avatar) for some examples of my work.
I've looked at the contest you are running, and aside from the fact that I think contests are rather unfair to the competitors.. I also find the prize to be low, especially if you want quality work. Normally I would charge 200$ for a full composition of the quality I think you are looking for. However, like I said, I like the character, and your game seems promising and the idea of further work in this field is enticing for me, so I am willing to go with 155$.
Hope to hear from you
Bianca