How Do I Create a Good Design Contest?

Today's question comes from Nicole, who asks about setting up a good design competition on 99Designs. What are best practices for getting the best designers to participate? Do you have a question about logo design? Record it at http://www.askpat.com/. Thanks to our sponsor, Design Crowd. To learn more about working with their designers, go to http://designcrowd.com/askpat. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.