Looking at a few more black hole pictures, I have realized there are a couple more things I need to fix.
1. I need to make the event horizon smaller, but there's a problem with that.
2. I need to add a second Einstein ring juuuust outside the event horizon, which I'm not sure how to do.
As for making the event horizon smaller, that itself isn't a problem, what the problem is is that it reveals an unwanted ring of mirror-distortion as seen in the picture below:
http://i968.photobucket.com/albums/ae163/Maxo12110/BHProblem.png?t=1280430972
See that mirror effect, just inside the first Einstein ring? I need to get rid of it in order to make the event horizon smaller.
As for the second Einstein ring, I'll do that after we figure out how to get rid of the unwanted distortion.
-Max