Is it just me or does no one notice how completely dull it is?
It's dull it lacks, basically, a background.
The Render takes up WAY too much of the signature.
What little BG is there is very, very dull.
The text is lame and boring -- though it's your best shot.
4/10
Learn from this and I expect to see you hit it out of the park next round.
Extra Note: You did a pretty good job on the Gundam render, except, as you said, there are a few bumps which is why you should try a background it'll blend into to hide the bumpy edges.
Also, what's up with the left upper corner? Is that like a part of the render that got stuck in there?