Yah, cutting and screwing in the drywall is easy- mudding and taping the seams can be a bit tricky. REally it is no big deal though-

However, the worst thing that could happen is that you would end up with more drywall mud on the seams then you need and have to do a lot of sanding to smooth things out.... The end result would probably come out fine.

Hopefully you can get a contractor in there soon though!

-David