I am mostly self taught, I first became interested in drawing (especially comics) in 2003. Learning to draw things, such as people, I did at home with my many books about drawing and animation. The only classes I ever got were those that are taught during Intermediate (middle school), where I learned a little about composition and colour from there. I'll leave it at that before I end up going into my whole artistic development at the length of an essay.

As for the "under-drawings", I see things in "mannequin vision" when I draw. That is... I see everything as shapes, the sketching progress just helps me remember what the vision looked like. I can draw without them just fine with almost the same end results if I wanted to, I just like to use them anyway (I'm a perfectionist sometimes). I find thinking in terms of shapes instead of what I actually see to be more helpful, I do it so much that sometimes I instinctively analyse people I am interacting with as shapes while I am nowhere near my art tools. Anyone, anything, anywhere, they are all something to examine for artistic purposes.

Being able to see but not draw is a combo of memory and motor skills I guess? It's like learning to walk, you don't instantly walk just cos you saw someone else do it. You are not familiar with your own legs, so you keep practising. Doing it over and over makes you learn more and more.
Here's another drawing, that I drew last month on an oekaki board.

I suppose this one is Tezuka related, Astro is in it.

To F-Man,
Thanks, I like to be close to the original but still include pieces of my own style.