Nice, but smudge the renders into your BG a bit more, and work on depth a bit, I suggest getting a nice stock background that suits the render, then blur it, after doing so, you can put all you effects in, but don't cover up the stock too much or else it'll totally mess it up. Your Sonic and Car sigs show great depth though. Great Job, I love your work, and if you need some resources just message me or search it on
deviantART: where ART meets application!(better than asking me most of the time lol).
Well, last thing I want to say is G'luck, I hope this gallery does extremely well. =D
*does australian accent*
I'll drop by every now and then to give you tips and and stuff. Bye for now. =D