At this point you can get as fancy as the wire will allow, or keep it simple. For this instructable, I just wrapped it around a couple times and finished with a loop. Eight inches is a good, general starting length and will usually leave just enough extra that you are not fighting with your end. However, if you are going to make really complex or really simplistic, you may find a different amount works better for you. Experimentation and experience are key!
Check your bead is secure and your post is smooth, put on an earring back, and you're ready to go... make another earring. haha