Using Photoshop to draw a lifelike planet with a stereoscopic sense of the planet

Ezit College "Method 1 (land is not a special reality):

[First] Create a new document, create a new transparent layer and draw a positive round selection

[Step two] change the foreground and background colors to dark gray (not too gray) and white in the selection perform a filter-render-cloud, copy the layer, and perform a filter-render-layered cloud in the selection

[Step three] hold down Ctrl-click Layer 1, then perform image-adjust-color balance, adjust to light green (in order to adjust the black, light green is part of the land, so don't be too shallow)