Size of the signature could be bigger.
Text on v1 really is not good.
Search up C4D's on Deviantart.com and look up some tuts on how to place them in.
On a good note, the background colours do flow, however looks far too noisy.
When you have a render, don't size it down so his full body fits the signature, just the important parts, like his head and shoulders.
The placement of the render to the right is sensible.
All I can say is find some Blending/Flow Tutorials and try not to sharpen the whole signature so much.