There's some nice artwork here, especially the background. Unfortunately the execution of the gameplay has a few flaws:
1. The gravity is too low, and the platforming is too floaty.
2. The collision doesn't work regarding the gems. Often Foxy would stand on them as though they were tiny platforms.
3. Foxy seems to slip right through certain platforms, and this mostly seems to happen at the start of each level when he's falling onto one.
Still, a good effort.