good job on the first image there! Too bad you didnt do it on the longways of the paper. Would have fit nicely!.
Try to do more contruction lines very lightly to lay everything down first. Look at some of my sketches they look like crazy scribbles but i understand them hehe. Then go for the render. If you keep going back and forth you'll just end up spending unessicary time.
And lets see some what you can do with your current knowledge of anatomy and make a character design....keep it fun!
Oh yeah i forgot to say......Try this and see how it goes. I see that your pencils have very short strokes, i can even see this in your lines. Make some quick gestures with very long commited pencil strokes. Do this everyday
Really like the face and the boobs on this one. Well rendered. I think what you need to worry about right now is linequality. Try to draw more with your arm and less with your wrist when you're doing the initial sketch. Do long fast lines and make them right from the start. 10 marks for the contoure instead of 100. It's very hard. But try it.
Here's some from today, the second one was pathetic...i wasn't really paying attention and it became more like doodle..probably because i was at school...And the head is tilted on the first one its skewed i should say.
I like your elven warrior chick (#231, the second one), nice detail in her clothing. Proportions seem correct, anatomy as well, but one little remark though : I can't quite place it, but something about her right elbow looks 'wrong'.
Also, her left hand (the fist) may be a little too big for a female, but that's a detail...