You need a bit more practice with the Skew tool in Photoshop. The angle of those arrow keys isn't convincing anyone. Also, you haven't blended the edge of the aluminium where you pasted the extra Ctrl key in. It really stands out.
Why is your Enter key the wrong shape and why is the \| button in the wrong place? You didn't photoshop those.
This is what a real MacBook keyboard looks like: