One tip I do have, is once you find something nice, export the cloud map to import in your final scene, as it renders much faster than computing all your masks and effects. You can do this by putting planet at 0,0,0, camera at 0,0,0, rotations at 0,0,0, and turn on spherical. Then, just disable the rendering of the surface in the planet, and set the v2 layer ambience to 1. This will give you a 0-1 range equirectangular map.
Gigapixel AI in Art mode can upscale these cloud maps, like 8k to 16-32k and it's AI often adds naturalized cloud shapes when reconstructing the image. So maps can often benefit, especially if from JPEG off the net.
PS don't forget to disable GISD in your export, and any other image effects (amto bloom/bloom will break the seamless texture).
