Sweet! I heard somewhere that if it's fresh enough you can gently put a cotton ball in the abdomen and pin the legs into whatever position. Looks really neat in a plastic acrylic case.
I'd -highly- recommend the Tarantula Keepers Guide by the Schultz's. It's chock full of good info and written in a way that it made me feel like I was just reading forum posts from well informed hobby members. They've got a section all about moulting and some possibilities of action if it goes badly