2D graphics for iPad game

I am currently developing an iPad game, and I am looking for someone to help me with the 2D graphics for it. The game has cute monsters chasing the player's fingers over the screen. What I need is sprite sheets for 2-3 monster types with simple animations for 4-5 states per monster. I also need a few static elements such as buttons, power-ups and backgrounds. The animations and graphics can be quite simple, and I've attached an example walking animation for one of the monsters. That's the style I'm going for. Cute, but with teeth. Both raster and vector graphics are fine, but I would prefer vector graphics in case of an iPad with larger screen resolution. Please include the word "monster" in your bid so that I can be sure that the whole ad has been read.