Hey cord, here's a cool thing you can try with that planet model. I'm pretty sure you placed the clouds on a transparent sphere model over the planet model. Instead of making that sphere completely transparent, make it a very opaque blue with glows. This will give a cool atmospheric effect. Also, make a copy of the cloud textures and change it to an opaque grey and paste it on the actual planet sphere. It will look like actuall shadows from the clouds on the planet.