When you make your own images, remember after you finish, and before your ender, try wild new camera settings. This image improved greatly after widening the field of view. (I stopped short of tilting to the side.)
Bryce 5's trees refused to work the way I wanted, so I used complex models in the solid glass spheres instead. This turned out to be a mistake. Due to the intense reflection depth rendering, this took a week to render.