Good start to your sketchbook. Looks like you have a good begining to your life drawing but my suggestion would be for you to focus more on the overall form and proportion, not just symbols of what you think the form should look like. Use life drawing sessions to study more. Keep posting and Working on it, I would like to see more of your stuff posted!
Your getting along with your positions. Keep working at it. Anatomy and proportions are pretty tough to get down. And keep having fun with it. The eyes on your fairy came out well. That hand looks a little rough though. I would look at these sketches and work on the parts of anatomy that gives you the most trouble. Keep at it.