Hi,
I will do the job for $30 flat.
There is no character design and no "real" work.
If you assign me this project I will ask for additional materials as larger resolution images like those you have uploaded.
I am new to this site, thus no portfolio or sample images are available, but this task is simple enough.
I offer unlimited revisions and tweaking. Since I feel there will be ongoing business relationship involved I will be glad to contribute to your project and deliver additional artwork and ideas related to your application success.
I play VampireWars on Facebook so I have strong user experience in the field.
I also would like credits for the artwork I provide.
Thanks for reading and I hope you will contact me with additional questions or sample illustration request.