I might be the only one for that challenge but I decided to go for an abstract BG. It's the idea of a trip that I tried to convey here, with a sort of diary in the BG and the colors of a sunset... =3

Render from Aethereality.net (but the quality was so-so :/)
+ 3 textures from deviantART (1 by Expose 42, 2 by crazykira-resources)
+ 1 brush from Obsidian Dawn

I dedicate this to SunfallE, the creator of the challenge ! Also, thanks a lot for your patience and all the advices you gave during the "fan art war" and even before :)