Here's a tip.
When having a "contest" for a design, first prize should be ALOT more than what you would normally pay for a design.
Why would somebody design something that you may or may not pay for....and their only reward will be their normal price "IF" you pick them?
For instance a professional logo should cost you around $250. If you have a logo contest first prize should be around $1000. Otherwise there's really no incentive for the designers to design something on the chance that they might get paid for it.
