This is my attempt at the latest @terratuts tutorial on Youtube. For the extra colour I just created a second cloud layer higher up and in a different colour. For the multiple streaks, I combined 3 simple shape shaders together with an add colour node. The landscape was from an old render I made that I wasn't 100% happy with.
Hope you like it
If you notice weird names for my files I upload, it's because i have an obsession with films, and do random names. This one is named after a song called Aurora from and old Abbot and Costello vive. Bonus points if you name the singers and the film