Well it depends on your knowledge and skills. It would be better if make a team of yours. Make a team of Freelancers and provide them the Job. You don't need to do anything apart from guiding them. And once they learn and are consistent, you can earn better, Just doing nothing.!!!
I am associated with DP from last 2 years and I agree with other members that it depends on your capability that how they handle the pressure and projects.but if one is full time working and serious enough he can easily earn 15k-20k