Summarize this article:

You can find one at a beauty supply store or your local drugstore.  Wax kits come in a couple of varieties. You can purchase wax that you warm up and then apply, or pre-made wax strips. Waxing your eyebrows yourself can be tricky, so if you are worried about making a mistake, it might be better to leave this to the professionals. In order to avoid making a mistake, only wax a little bit at a time.  Start at the outer part of the brow and move inward, toward the arch.

Summary:
Purchase a wax kit. Wax one section at a time.