After you become familiar with how your rabbits grow out and when they tend to look their best, you will learn to time breedings to have your rabbits in optimal condition at important shows you know you want to attend. (Nationals, conventions, big local shows, etc.) Different lines mature at different rates, juniors can look weird most of the time but have that "perfect" week or month in their junior career where it all comes together. Sometimes lines can take extra long to mature and not be ready to make a debut in the senior class until their a little older. It all just depends...