Meh, you haven't taken advantage of the tablet at all (besides manoeuvring with a stylus instead of a mouse) - it looks like it could've been a mouse-drawing as much as a tablet-drawing. You need to activate pressure controls, etc. The most popular (standard) thing to do (afaik) is to adjust size by pressure, so that you get a thinner and less opaque line if you draw soft lines whilst getting higher percentage of the size you've set with pressing harder. It'll make it seem more like a pencil.
Other than that it's really just like drawing with a pencil once you get used to thinking the tablet is the screen and the stylus is the pointer on screen.