I want the pots to get mossy which is not always easy when you live in a dry climate. I've heard if you brush plain yogurt or buttermilk on the pot and then rub moss on it that it will grow moss quicker. I'm not sure how great the moss will grow since the rosemary needs full sun! I didn't think that part through until after I did it.
I removed all the stems except the strongest center stem and then removed all the leaves except for the very top. I pinched off a little on the top which will make the plant send off two new branches and you just keep pinching as they grow until you get a little ball shape at the top. Here is a photo I found of what they should look like....although it may take a year or so to get there. I'll keep you updated on it's progress.
Click here to find directions for starting them from just a clipping of rosemary.