I just updated the document given bupaje's idea - an image of the plan. It's not a pencil sketch, but drawn on my computer using the GIMP. I also added the list of pros and cons (as I had planned), but haven't gotten to the tips and tricks section yet.
"You level up the fastest and easiest if you do things at your own level and no higher or lower" - useful tip
My 2D game - release on Jun 13th; My tutorials