A good dance instructor starts with someone who had an ability to teach. Anyone can take steps they've learned and just reiterate them back to someone else, but a good teacher can see that everyone learns differently and has the ability to tune into that person's weaknesses and find creative ways to overcome them. Now a good dance instructor should not only have the aforementioned ability, but should also obviously be a resource or wealth of knowledge about the dance he/ she is teaching. The more experience, the more resources this person will be able to give his/ her students. But they will not necessarily be able to communicate those resources. That is why good instruction is two-fold.