Three small characters for iPhone game

I can code but I'm not good at graphics in any way. I'm creating an iphone game and need someone talented to provide spot graphic images as described below. A successful project is very likely to lead to further work. The game is an investment/trading type game - 100% for fun and aimed at the whole family. I'm looking for an investment banker/trader character in three poses: 1) Are you up to the challenge? 2) Yes, you did it! 3) No! You suck! I'm thinking of a squat guy dressed appropriately in the sytle of a banker / trader. Almost a caricature. He must be fun. The graphics will be displayed onscreen alongside printed text. The goal is purely to brighten up the text-heavy game / screen. I'd prefer the images to be provided in Illustrator format or similar so I can manipulate size etc without losing quality. Anyone who can provide some appropriate examples from their portfolio will be at a significant advantage to others. Thanks