Just a couple skybox textures I've made for my maps:
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For a ruined temple situated on a mountain middle of a desert. I think the clouds turned out pretty good.
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A castle on a snowy mountains. Clouds could use some work on both of these.
This map isn't made by me (made by this guy
http://gazoid.com) . I just used it to test the sky texture. One of my first Terragen2 creations actually. The billowy clouds need some depth.
Crits&comments on any of these are most welcome.