I think you're doing a great job. The main thing to remember is that Photoshop, Illustrator, and every other app on the computer is a tool, no different from learning to use oils, pencils, or watercolor. I know your traditional skills are excellent and as long as you have the knowledge in your head, the tools are irrelevant. The main hump is just overcoming the nuances that that particular tool offers.
It looks like you're well on your way. I'll try to talk one of my friends who works well in vector drawings to post some of his stuff up.
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