Paul, I agree with you about the satisfying feeling you get from doing it yourself. The only drawback is that there are things that we just can't do without special tools or equipment like an engraver has... If it doesn't have the look and feel that you are going for, then I would say that it is a great idea to take it to an engraver and have it done. That or buy an engraving kit and try it. I know I would try to do it like you did first, or even use other methods, but it would have to look like I wanted it to or no dice - off to the engraver.
I'm a scratch builder and fabricator type by nature and I try to make all that I can myself, but obviously there are many things I can't do for lack of knowledge, equipment or even the time spent being a consideration. I made some figures from wax a while back and they came out decent enough, but I didn't feel it was worth the time I put into it, so I buy my figures.....as an example.