Great sky; superb colours. I don't like the softness of the tree though; but you can hardly pin every leaf perfectly still to get the shot...
Only other suggestion would be to move slightly to the right; or alter your crop - the tree is a bit to close to centred for me; particularily when its a shot that I don't feel would benefit from a centred composition.
You could have increased (shortened) the shutter speed, to help freeze the movement. You shot at 0.3 of a second, F9 and ISO 100. If you has opened the lens a bit, and turned up the ISO it might have given you enough to get a faster shutter speed.the tree isn't sharper cus it was windy, so it was dificult to do it without being soft.