AC: Space Dog

The background with the stars and the planet is nicely done, the planet looks like it has a surface with texture. Up in the mid ground you start to loose a bit of that texture though, it looks more like it was loosely blended together. For more consistency you might want to try adding some of that realism back in. The dog by itself is very nice, but placed in the background it doesn't feel like it's really there, it lacks presence. You set up the composition quite nicely. It looks like you do have a basic understanding of design.

I mean for all of this to be constructive. Keep up the good work!