Background is smashing, and text quite good aswell.
Only thing I dislike are the effects/light on the arm.
If we're talking about v4: get rid of the yellow/green tones. Just the red for his left side and the blue for his right will suffice. I'd also expect some strong blueish light source behind his head, abit to the right (see how the edge of his face is lit up?)
Try other styles mate..
I've seen your works is kinda samish..
Oh well nc outcomes..
Like the effects going..
The text compo is nice..
Add some lil depth..
And the blending is not that good on the head of the focal.