don't sweat it. The first one is always the hardest. Just make sure you work on the crown first and the root tip last, so you don't accidentally crack off the tip and fail.
the hardest part for me was actually carving down the cingulum and the marginal ridges - I had been carving from each of the 4 basic sides and gotten a blocky thing, and it took me a while to figure out exactly what i needed to do to get the proper slope and angles.
You'll get better as you carve more teeth, and by the time you do wax-ups you'll have enough experience to be able to adjust your embrasures, and carve all the fine details.
I liked using the half hollenbeck, tanner carver, and to some extent the discoid cleoid.
Oh, and polish that mofo like your life depended on it. Dental instructors are like raccoons. They really like shiny things.
heh heh.