I put together a tutorial this evening on how to make up new licks, starting with existing ones:
http://www.dkeener.com/music/tutorial-o ... tar-licks/
The YouTube is at
http://www.youtube.com/watch?v=VGcJUa9O5Iw
The tutorial runs about 5 minutes and covers a modification to one of The Claw licks, along with mods to a simple scale, along with a progression.
If you haven't visited my blog before, you might want to look at some of the previous entries as some of them are tutorial-oriented too.
I don't plan to do many more tutorials .. probably no more than two. They are not my forte, and the best tutorials are those provided by Craig Dobbins, John Knowles, and John McClellan. (Hope I'm not forgetting someone ... probably am.)
Anyway, I hope it's useful to you.