Whoa. That is a lot of work! I just start drawing on dAmuro when I draw digitally. I should try tracing my pencil drawings. That is what some people do. I just take 1 to 3 hours on anything that I draw really good. Like my Na'vi OC(the movie Avatar with blue people with clans are called the Na'vi) and she took about one hour surprisingly. I worked so hard on that. It probably only took an hour because of their cat like noses and big ears. I constantly draw felines.
Yeah, drawing on paper is 20% easier that on a computer, I've been practicing on my computer drawings, I mainly use MS Paint. It looks nothing like my pencil art [link] I was thinking about starting using MS Paint, but I just so used to using paper.