2D Game Design - Space Station logic platformer

Hello everyone! I'm working on a mobile/tablet game that is currently in closed beta (the game is already functional and fun to play). It's a logic platformer, taking place on a space station where a single astronaut needs to get to exit by pushing boxes, opening gates and omitting obstacles (lasers, etc.) I'm looking for an artist who will create eye-catching graphics for this game, as well as the title screen and between-level screens. Please see the attached PDF for screenshots and full description of the project. I will only evaluate offers/bids that come with an image (concept art, sketch, example etc.) of your idea of this game's graphics, so that I get a feeling of the direction your further work would go. Best regards Adrian Adamiak