nice shot but the shadow spoils it a little. You could try bouncing the flash off the ceiling or use a tripod. If you like me and only have the built in flash (eek), then a tripd and long exposure or large aperture should do the trick..
Your picture is very nicely done, the focus and contrast are perfect. I do think it might have been more effective the tricycle didn't looked tipped over - it looks like it's going to slip off.
I think this is a great subject for the challenge. I don't like the composition or the lighting. The tilt is okay, but the table it's sitting on and the from could of been improved. I'm not sure why you cropped this in this manner? The bike is wider then tall and this seems a bit off. Just my 2cents and ya know what that's worth.