Elise, nice image. Play around with the Darken/Lighten effect, you'll like it.
Yes that works well. I have had so many total failures on scenes like this.
I may be tempted to consider very slightly darkening the bottom left corner with an adjustment layer and mask so that it doesn't conflict with the bright top right area; but that is just a very minor thought.
Thanks very much -- I'll play with that filter, Jiro. Is there any way to get multiple effects in Color Efex, other than doing them one at a time?