True,
But is the image you use in your model owned by you/made by you, or do you have permission to use it?
Cause if someone else took it, they have copyright. And you can't just get something off the net and use it, cause that would violate it.
Every part of your model should be owned/made by you, or you should have permission to use it for the purpose of this contest, under Vstep's conditions and terms.
Cause it's not just going to be displayed somewhere, it's potentially going into a commercial product. That's different than using it on a website somewhere for just the viewing pleasure of non-paying visitors.