I;m sry nobody commented I'll comment now...

Anyways the lighting seems to be a bit off. The right side is goo but the left side seem to be suffering. The text is wonderful amazing job on that and I am very impressed with that because text is hard. The bg isn't bad but it could use more detail and depth, I would also try working on bledning your renders a bti more. It seems like in this sigg you blended by outlining it in white lol.