Reminds me of a high-school art assignment. For anyone who thinks they are bad at drawing or sketching, here is a trick: take what you want to draw (assuming it's from a book/magazine/loose leaf), flip it upside-down, and take another piece of paper and cover over most of it, revealing a little bit of it as you go. Try not to draw what you think it's supposed to look like, just draw what you've uncovered. Stick mostly to outlines and avoid shading or colouring. The end product will probably look much better than if you had done it freehand once you flip it around. It might surprise you.