Can you upload a screenshot of your shot and the halo you want to composite onto it? From your description, it sounds like you’d want to use Mocha to track the head. I don’t know a tutorial off the top of my head, but I’m sure there are plenty if you google it.
Also, you mention the subject is moving and twisting around. How much movement is there? With too much movement/motion blur, you may have a hard time getting a good track anyway as you typically need some high-contrast points for After Effects to track. If the shot isn’t too long, you may be better off keyframing the halo manually rather than spending several frustrating hours fiddling with the tracking settings trying to get it to work.