Lucky you!
Jamsbuying you really should have no fear of embarassment in any class. That is the whole purpose of a class is to learn so why would you assume other people in the class already know the technique? You really should reconsider and take a class. They are so much fun and you will be in like company of other beginners. Most classes are labled for beginners, confident beginners, intermediate etc. Please you should take advantage. Think of all you could accomplish with a new technique learned.