Dave, for the moment I do. However, I'm slowly putting together a collection of standard designs - it's much easier to work that way.
For a while I was taking custom orders from people on Craig's List, and holy shit, that was a mistake. I was spending more time answering people's questions through email than I was actually welding.
Then there were guys on two separate occasions who cheesed out on me, leaving me to find other buyers for their specially built stuff. The first guy taught me that I should start requiring non-refundable deposits before doing any work. The second guy taught me that I should start requiring the full amount. It's been three months and I still haven't found a buyer for the second item.
Now I'd only take a fully custom order from someone I know is reputable or someone referred through such a person.
And yes, I'm actually holding that handstand. Get on my level.