Sketchbook: heads in 3-4 view

These are a few sketches I made after reading a really nifty tutorial on www.freshdesigner.com on how to draw heads in 3/4 view with a more fluid approach than the regular ball and jaw method. You guys should check out that website, if you haven't already.

The girl on the bottom left was drawn using reference from a stock photo here in dA, "And Now Some Blues" by the lovely :humle3000: you can see it here: [link]

(I kind of mispelled her name on the actual drawing :s )