Since no one would hire me, I had to go out and find clients on my own. It's been terribly difficult and I wouldn't suggest it to anyone. I have collected over eight hundred phone numbers and names with little success. By the time you find someone who actually does use Pro/E, they have a different revision than you do, and the deal doesn't work. Pro/E is an expensive, difficult to learn program and is only used by large companyies who don't work with independent contractors. This has been my experience for many years. There are exceptions, but finding them is 'way too difficult to make any kind of living. AutoCAD is much more widely used, but engineers in the fields that use AutoCAD have Professional Engineering licenses and don't do product design or any of the things that Pro/E people do.
The little work I can find in Dallas has paid $50/hour. I met one person who was awfully good on Pro/E and ALSO Solidworks who got $75 when he did moonlight work. I met him while he was on the way to working in a company as an employee. His experience didn't lead him into becoming independent either.