A racket seen from behind with the strings facing the camera is a very specific brief, nice that you added the screenshot. I founded ComposerScout, a free spot where game devs post who they're looking for and pixel artists who fit get it in their inbox. Posting takes about a minute, it's free to be on, and I don't take a cut of anything you pay people. We'd love to feature your game there: https://composerscout.com/#post