Tablet drawing is a bit of an acquired skill. I've seen several reports of people buying one and feeling that they suck at it, but this varies a lot.
I only tried drawing with one for about ten minutes and I experienced a few issues with the alignment (absolute versus relative), as well as with the whole clicking and dragging...I hope those settings are somewhat changeable xD
Given this is a significant investment, of course I'd like to see you make good with it, so see what kind of styles might suit the tablet, and go from there.