Thanks Gary! I'm collecting information to choose the best way of doing procedural clouds. I also want the clouds to work directly in the skybox, without the need of using a skydome mesh. I made a simple tutorial showing the creation of clouds for use in azure[Sky]. This video is divided into 3 parts. 1 - Creating the luminance of clouds in Terragen. 0.0 >> 07min 55sec 2 - Editing the textures in Photoshop. 07min 55sec >> 11min 38sec 3 - Importing to Unity and showing some customizations. 11min 38sec >> 21min 45sec The cloud created in the tutorial did not look good, to make the cloud look realistically would need to use the node editor, but it would take a long time to video. The quality of azure[Sky] cloud will depend largely on the quality of the rendering. The point of the tutorial is to show how the texture is created. I dont know speak in English, so I put comments in the important times.