Thanks mate, trying the dappled leaf's suggested by Fletch, it might make more difference when I learn how to do it better.
The idea is to have a png of leaves outside the window to give dappled light through the window, the version here is one 'pane' over the two windows. Not sure about it but there is something in this imho. Have to thank Fletch on the Twilight forum for that suggestion.
[image: tn8B_LeafStudy2928p2h36mIr0R.jpg]