First of all, all you have to do is calm down. Just be yourself. There's almost 50,000 members here on DrawingNow. Be patient. Sometimes I have that problem, too, so I just be myself. Sometimes I have a problem that not many members out there would join my contest. I have a contest, if you would like to join. Click here if you want to join.
The best way to do is search for any members and ask them for them to join for your contest. Besides, you could make a bulletin on Member's Area page so it could be easier to let them join your contest and have fun.