Pillows make good hunchbacks. Tuna juice is also very effective. If you're naturally a visible and outgoing person, it may be a stretch. A good way of doing it is always looking for the darkest corner of a room and sort of revolving your travels around that corner. Multiple Nosferatu, should of course pick multiple corners.
Skulking is also a good way to hide makeup deficiencies.
If you have very slight makeup, or don't look all that hideous at all, then you can use skulking to make sure people don't get to see your face all that much. If, on the other hand, you got snaggle fangs, six-inch overbites and pasty grey nasty skin, don't waste it by skulking too much. Look 'em in the eye. Make 'em squirm. The Information Network.