Trust your own instinct. Your mistakes might as well be your own, instead of someone else's.
Both Yoga and Pilates are movement techniques that integrate the use of mind and body which can create overall positive physical benefits if you are working with an instructor who you trust and are comfortable working with.
Before you start you may have questions that you feel have not been answered elsewhere on this site about the classes that I teach, my experience and my philosophy. Please feel comfortable in writing to me in advance to ask your questions.