Thanks. I did once order a couple of boards that someone else designed, and it turned out that there was a flaw in that design, but the tech over there fixed it and sent me working boards. I was impressed.
I'm designing a very simple board (a couple of traces connecting headers, some standoffs, no components at all) that will nonetheless do something I need done. That should teach me a bit in the process before I move up to trying something slightly more complicated. If I manage to screw up something this simple, I know I'll need to put much more time into it.