I am hooked on the new iOS game, Draw Something. Although using my finger on the touch screen works okay when drawing pictures, I want to be more precise. I was wondering if there is a stylus out there that would work good for drawing on the iPhone screen. Most of the stylus I have seen have kind of a big bulky tip on them. Is there a good thin tip stylus out there that will work with the iPhone 4s? Also, would a Power Support Crystal screen protector affect the use of a stylus?