Don't be intimidated. I've got a 17 yb and yb combos in my collection. That doesn't include the babies that have been produced and been sold. Like Eric Allen said, its a learned skill. There are plenty of references to help. This site, Youtube, at shows. Look at as many ybs as you can. That spider is a nice looking animal. If you're getting her from a reputable breeder, I'd say its safe. Some of the tell tale yb signs do get lost in combos. Generally speaking, the yb will make colors more vibrant than a similar morph. That is a nice looking girl though. The YB gene is a personal favorite.