New answers tagged texture
Skysphere is a slightly obscure term. Try this one: https://www.google.com/search?client=safari&rls=en&q=milky+way+skybox&ie=UTF-8&oe=UTF-8 There's various freebie apps around for converting between sky spheres and sky boxes if the skyboxes don't work for you. Similarly you can "fake" a sky sphere or sky box from a good sized image with ...
Try "gothic clipart" in a google image search, and head from there.
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