This page pictures a group of my favorite upcoming juniors (and a couple seniors), with pictures from different stages of development. They are pictured youngest to oldest, from left to right. One of the traits that I look for in my herd is consistency in development. Rabbits that look very similar at any age, and don't go through an "ugly/gangly stage." One thing I've learned is that type and body, for the most part, stay the same. If a rabbit has short ears and a smooth body at 6-8 weeks, it will most likely have short ears and a smooth body at 6 months. Fur seems to be the only trait that can change significantly.
