I am quite happy with the sky in this image, though it had to be tweaked in Photoshop in order to look this way. The base atmosphere is from 3d Dimension, but I added clouds from an excellent AsileFX pack and tweaked it following the instructions of the excellent Dax Pandhi tutorial called capturing the brilliance of light.
Small elven ship and elven village lighthouse by Meshbox.
Check out this PBR material package at Renderosity.
