Just for now, then, I would recommend a Pilates exercise called the Dumb Waiter. I have NO idea why they give them such wierd names, but there we are.
It's best to find yourself a good instructor, of course, but if that's not feasible, then try to find a Body Control Pilates book, or something on the web to describe the exercise.
I shall attempt to describe it later - might take me a while to do it properly so bear with me...