Make-your-own Tessellation Lesson - Paper cut method Perfect while learning about MCEscher. Tessellation is the process of creating a two-dimensional plane using the repetition of a shape with no overlaps and no gaps.
Lackadaisy Expressions by *tracyjb on deviantART for drawing. This remains one of the best depictions of expressive drawing I've seen. A really great tutorial on how to draw facial expressions, and especially wonderful if you need to draw cartoon animals.