You need to fix the black stuff around it, the corners are too round, the Apple in the front is way too big, the Apple on the back isn't supposed to be white, the mouse looks… let's just say it doesn't look like a Mighty Mouse, and there should be a little slit on the top (in the back).

Check this link for more references:
https://www.apple.com/imac/design.html
Can't wait to see this with some more improvements done.