This looks very grainy to me. Expecially the background. I love the composition though. That was some serious apple eating you did. I like this because it's not the typical still life fruit shot you normally see. The angle is wonderful and your framing/cropping are also great. Excelent choice of "garbage". Good luck in the challenge. ~Hbunch7187~
Mavica FD? You're overcompressing, and that is almost never a good thing. I don't know your camera type, I'm only guessing at the Mavica FD thing because they're notorious for over compressing. Definitely look into JPEG compression, starting from what your camera saves to what your image editor does. It's a great image otherwise (except I might crop out the top blackness)
The idea for this shot might be the best one for the whole challenge. I don't know if you have some compression issues of if you made the image sort of grainy on purpose. Whatever you did, I like it a lot.