Naaaa all you need is funtionability....New word folks !
As long as the enclosure is fairly square, you are in business ! You will want to check out this site :
http://www.freewebs.com/crossfireenclosures/for an easy design, that most of us use. Only hard woods now ! And make sure that you test temps and lights several days before you add in your dragon !
Janie.