to answer some of the questions and reply to some of the remarks:
I trace because I like doing it. I used inkscape (which is free, google it), without any tutorials whatsoever, I'm sure if you google it that there are plenty. I do know about variable line width and own a (somewhat cheap, but working fine) tablet, but wanted to give it a go this way. I'll post one of the previous pics I did in ps (not really vectoring, just tracing), in a second. For that one, I didn't use my tablet either, just the built in stroke function. No, I'm not going to "give up on vectoring" like I said, I do it because I like it and (at least some) people seem to like the results. Vectors are often used for posters, or the transparent ones can be used to easily make wallpapers. I did spend more than 10 minutes on this, much more even. I put the signature on there because I felt like it, with your apparent skill, you should be able to remove it.