The best references come from magazines and random photos u have around the house but most of all drawing from life. This is an essential part of any 2D art form.......every artist learns this as they grow.

So take a sketch book, canvas, whatever you like to work on and start with some rocks or a bush. Believe me you'll learn alot more about how to use both sides of your brain through live drawing then from any photo!

THX

Thats's all for now^^