It looks like its missing something <_< You can see Mars Rover from the reflection But im open for comments
Are you going to tell him how to make it better, Mantis? Imho, DT try to shrink the render, lower the brightness and add some lighting effect from the filters menu. You can also remove the shadow. You see the shadow would've been alot effective if the render was smaller and no too bright. Other than that it looks cool. B)
It does look a bit like a render slapped on a background, i say keep the shadow on the background but add a little more lighting and depth to himself, he just looks a little out of place. I think the overall sig is a tad too tall giving you too much empty background on show. Not sure about the D in the corner too but afraid im not sure what to do with it. Has potential tho, i like the rover on the visor, keep up the good work