My new cage

Looks good and really all that matters besides correct temps & humidity is if you are happy with it. You may want to cover the back and 2 sides with something. Such as black construction paper taped on the outside of the glass. That will help your bp feel more secure especially if the tank is in a high traffic area of your home. Also check out this other thread for more help/ideas.
http://ball-pythons.net/forums/showthread.php?t=201740

Yeah, we have a vine that was used for a lizard a while ago, I was planning on putting that in.
I just placed cardboard covered in foil tape on the lid. so that should help.