One of the better instructors in the Los Angeles Area is Marie-Jose Blom-Lawrence. Do a search on Google and you'll find all sorts of information on certification classes from her.
www.google.com/search

So, one of the problems with becoming a Pilates instructor the way you seem to be going about it is that you haven't had formal dance training or real Pilates instruction one-on-one, and the short courses you take to get mat certified are not going to make you a mat instructor, they'll just be the beginning of your education. Pilates takes years to learn and requires a commitment to that. I think it would do you a lot of good to find a very good instructor in your area to take private lessons from for a few weeks to get the feel of real Pilates instruction. Before I taught Pilates I taught swimming, weight training, step aerobics, kick boxing and ab class at the YMCA, and learning to teach those things was easy easy easy, but when I went to school for Pilates I realized how different it was and how much more care and dedication it requires to be good at it. Lots of instructors who don't take care to educate themselves well hurt students badly, and are sued. This is big talk around studios. It is because the trademark suit made it so anyone can call themselves a Pilates instructor and the public doesn't know how to differentiate a teacher who has a hundred hours of anatomy study from one who had a weekend course.