Here's what I think you should do, try moving "WELLING" up and closer to "TOM", and perhaps "rhydian" to that space next to "TOM". You would wanna lower the opacity of "rhydian" if you do that though. That's what I would do anyway. I wouldn't want people to read my text as "TOM rhydian WELLING". It's not a must anyway, because the fact that you sign off your sig in lower case, use a different font, and leave the primary text in CAPS already makes the text look good. I just don't like that empty space next to "TOM".
Render looks a little LQ and I'm guessing that you sharpened your C4D over your render. It sort of distorts the guy's face and that doesn't look good. So, maybe you should erase the part of that C4D that overlaps his face?
This is pretty good for a first attempt. Read up on more tuts and you'll be making some really cool sigs in no time at all!