The text is too wide. Try to move it closer to the bike. I haven't used sketchup, but the render quality seems to be rather bad. And I see you've uploaded 3 models. Maybe It'll be better to make one detailed one instead of 3 simple?

Lots of effort in your entry’s KUDO's maybe you should try some sort of infinity curve so your creations don’t look like they are floating….. And possible this SketchUp Shadows feature to give them a bit more depth

http://sketchup.google.com/support/bin/answer.py?hl=en&answer=114937