The process started out with creating some doodles, and drawings for getting a feel about the world was it was
Then i decided that there could be some kind of portal with a mysterious center element. So started searching for forms
Breaking it down to the final design, but adjusting it in 3D afterwards
The Portal was modelled in 3dsMax, then painted in Substance Painter. Lighting and Rendering as well as Terrain was done in Houdini.
I also wanted to create the whole planet so i lit and shaded a simple sphere