Woo! I've done a bunch of awesome art/painting/design tutorials on Craftsy recently. Care to develop your illustrative prowess? Well, you'll find plenty of info and awesomeness in these posts:

Transfer paper how-to

First, how to use transfer paper. You know how awesome parchment paper is in baking? This is just as awesome in art, though its use is quite different. You'll find that you can draw things you never thought you could when you get a little tracing help from this easy to use medium. Here's my primer on how to use the stuff.

Urban Sketching

What is urban sketching and how do you do it? You'll find a fun article I wrote about finding artistic inspiration in the big city, including ways to express the energy and buzz of the city in fun drawing and sketching exercises. Check out the urban sketching tutorial here.