If you are a first time user at Designhill then for inviting designers to your contest, all you have to do is message the designers on their designs. You can find designers either by browsing through their designers portfolios or by browsing through the design gallery
Alternatively, if you have used Designhill before, you can invite designers that you’ve already worked with to your contest by clicking on the My Projects > My Designers link in the header at the top of the page.
You’ll see a list of winning and finalist designers from your previous contests. Click the Contact button next to a designer’s name and invite them to your contest. Also, when you invite a designer to a contest, make it clear that you want them to particpate in your contest.