QUOTE(BadStrad @ Dec 14 2010, 05:16 PM)
One tip I've found useful is to rest my violin scroll on a bookcase and to finger the piece with my thumb held off the neck. You could do it just holding your violin with the weight of your head but I like the reassurance that the book case gives.
If you have any anxiety at all about dropping your violin, this could be a good idea. Alternatively you could wrap the scroll in a duster and hold the scroll against a wall as you play. You should be able to completely let go with no fear of dropping the instrument.
As others have said, I would definitely raise this with your teacher. If it's any comfort I raised a technique issue with my teacher recently. I too was worried that it would sound silly, and said I wished somebody had told me 25 years ago when it would have been much easier to fix. The reply? It's never too late to fix it!
The only other thing I would add is to be aware of your wrist when you play. Make sure there is no tension before you start to play. Whenever you notice any tension building up, stop playing. Give your arm a bit of a shake, and rest if you need to, and then start playing again making sure there is no tension when you re-start.