[Codein]

That's a bit better. However, I still have issues with it.

The front part shouldn't have the rounded shading. It should be flat.

Also, I dislike the way you've added the curved shading to the metal bit on the sides. The brightness should be relative to the surrounding shading, not just a block of bright yellow. Also, add more shine on the edges, where light would fall on it.

Also, are you using references images? My favourite way to practice is to look up objects on Google and then pixel them.