Photoshop Draws lifelike planet

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)

[Step Fourth] Select the white part with the Magic Wand tool, then select-Feather, feather around 10 pixels, then perform the image-adjust-color balance and adjust to yellow.

[Step Fifth] Click on the layer 1 copy to select the light in the blending properties.

[Sixth] Add some layer styles to the Layer 1 copy, two layers are spherical, if you can't see clearly, adjust the image of Layer 1-adjust-brightness/contrast, there will be three-dimensional feeling oh ~

　　Method 2(cloud is not a special reality):
When you do [step two], all two layers perform filters-render-layered clouds, and the land is really like.

If you're going to draw another planet, you don't have to repaint it, just perform a filter-render-layered cloud on the layer 1 copy, you can add halo, satellite, Space Shuttle,
Space station, comet, spaceship, alien ... I believe you do better than me!