|You might put a little more information down as you want a
Several obvious points noted in comments: crumbs on the plate, specks of something on the fork, the overly sharp top edge of the fork - which may simply be an over-exposure phenomenon.
I find the composition weird - the angle might have been enough of itself, or the odd cropping out of half the pie, but both together ... what was your point with that? what were you hoping to communicate? It says nothing to me I'm afraid ... and I've looked and looked.
But for me it's the lighting that lets this down most: you're really far too close to your subject to use the on-board flash - that's why the foreground of your shot is over-exposed, and the light falls off so rapidly. The other problem with a shot solely lit by on-board flash is that the light comes from nearly the same direction as you shoot - so almost all potential for texture is removed, and likewise most sense of three-dimensionality. It also reflects back into the camera very easily - look at the very bright pixels here and there, and that awful shadow of the edge of the pie.
Not your best submission, and I think you did rather well to score as highly as you did. I should add, as a non-American, your subject has no emotional resonance to me.
Good luck in future