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Clouds are tricky. I haven’t figured out the best way to render them yet,
but take a look at this pic:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=226287
Rendering that type of “cracked and craggy” planet is a lesson by
itself—I’ll get to that in another post. Anyway, for those clouds, what I
did was:
-Create a new layer on top of the planet layer just rendered.
-Select the Airbrush tool and set the color (lets say white), the brush size
to 5 or 6 and Opacity to 75% and Flow to about 50%.
-Create the “clouds” by spraying out puffs of white here and there. Keep in
mind that as the clouds near the dark side of the planet, you’ll need to
darken the Airbrush color. An easy way to pick a color is use the Eyedropper
Tool and click on one of the clouds you just made—you should get a color
somewhere between white and the color of your planet.
-After you’ve made your puffy clouds, you can try using the blur filters
like Motion Blur or Radial Blur to make the clouds more wispy and feathery.
-As a final touch, go to Layer, then Layer Style, then Drop Shadow. Shadow
color should be black, Opacity should be between 75-80% and the Distance,
Spread and Size will vary (in this case, try 10, 5 and 5). Try to match the
Angle Setting with the angle of your light source (imagine a line from your
star to the center of your planet and that’s your angle). Also note that
higher the distance setting, the higher the cloud looks from the surface of
the planet.
Hope that helps! :)
Dan
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