Elite Comando

Roses are red

That sig is too blue

That is bad, as youzhe

The bg is cool and all, but how is the render blended if at all? You just tilted it a bit. Did you add a gradient map and just overlay? The initial concept is good but the render isnt involved at all

Have you? 

The render looks abnormally different than the background. It has a orange lighting on his chest and white lighting on his sides. There are no light sources. You havent blended the render at all. Get good. Learn how to blend before trying to act like you do.

thing is, the light comes from beneath him, but there is no light source there. Start with that, also blend render?

You haven't at all lol. You wanted criticism so i'm telling what stands out. It's slightly better than all your other entries but it still lacks basic things