This is my first drawing with Vellum for the iPhone. Vellum is a super-simple drawing app that has 3 brush types, no undo, and beautiful pixel grit. I’m absolutely in love with its constraints and out-of-the-way UI.
For only $1.99, you should go buy it at the iTunes App Store. I can’t recommend it enough.
Oh, and I found out a long time ago that I suck at drawing with my finger on the iPhone. Fortunately, making a stylus is really easy. Go get a pencil with an eraser, some aluminum foil, and some tape. Make sure you use a piece of foil at least 1.5″x2.5″ in size. You can even cut the eraser at an angle to get a more natural contact surface. Then you’ll assemble it and wind up with something like this. Works great.