Oh my goodness, thank you everyone for your help and advice. I in fact yesterday went to my local Janome store and looked at the fm foot. I was intrigued by it, but also very anxious about it. I was advised by the lady to try my satin (applique) foot first, and if I couldn't grasp that way, then maybe have a look at purchasing the fm foot. I will have a go today, and let you know how I go. Heres hoping.
Di