Mike,
I actually have Paul's DVDs and watched them. They are great and I recommend them as well.
Paul trained in Europe and is a professional so when he makes it look doable one still has to wonder. I see a guy like you do it... an engineer and hobbiest like myself and it makes it that more accessible. I'm sure you have MANY hours of practice and can be considered a professional, but at least you didn't train extensively with a master.
Your work is very inspiring and I enjoy watching the progress.