melmade the blog (the one I update ): Light Study
Let's Draw Lighting Angles by Kxhara on deviantART. Check out the rest of her profile for a great collection of stock images - all self-portraits!
Male Planes Torso Art Reference Cast by Philippe Faraut
How to Draw the Human Body - Study: Anatomy for Comic / Manga Character Reference
Lots of head angle reference .
Challenge. Draw these eyes at least once. Then draw them without reference. Keep practicing, changing them and add your style.