I think this is very helpful but considering I already know most of these techniques I learned a few I've never thought of like the stippling and trying new ways to hold the pencil. I especially loved the idea of practicing textures. Great job!
Eh, I'm not overly worried about getting things to look all that realistic; Realism and whatnot are good for practice, but I much prefer stylized art. What I'm more worried about is just making things look nice. >_<