...either actually doing tech support or designing cool flyers/ads for small businesses.
Thinking of starting a business...
Do it. Hell, do both, but I suspect there is far more competition for the latter, and most of your profit will come from the former. If you got the skillz, and I'm sure you do, I can't imagine you wouldn't make good money.
I don't know if you're anywhere near Atlanta, but the company my husband works for always seems to need someone down there for computer stuff. He has to fly down and fix things that they should be able to have a local IT guy come and fix!