While this Japanese guide book render of Ocarina of Time's castle town is unofficial, it has me thinking about one of the things I'm most hopeful for in the remake:
A larger, more fleshed out market town that goes well beyond a single plaza and a couple small alleyways.
You'll get better faster by just doodling for 20 minutes each day than you will by bookmarking any more tutorials.
Get off here and go be bad at drawing for a little.