Thanks for the comments
I've been gone for a while but I'm getting back to drawing again.
I think you are right akky, I should try to work on drawings that focus not just on the face, but add some other interesting things as well.
I think in my previous drawings, I've been too afraid to color, which makes it so my drawings are really light and don't really "dig in".
I've been working on a more ambitious drawing for about a week now, but I need a bit more time
For now here's some smaller stuff:
This one is oekaki, drawn with a java applet (ShiPainter) so the lines aren't too great, but the coloring was fun. If anyone wants to try it, the oekaki board is here - http://www.dewdrop-garden.com/oekaki