Create a mask for your Active Worlds clouds textures with Photoshop

• Take the texture you have obtained following the guide How to create a cloud texture with Photoshop.
  
  
• Apply Auto Levels and change your image into Grayscale mode

• Save the result in Bitmap format (.BMP).
  For use in Active Worlds, save the result using the same name as the texture, followed by the letter "m".
  Example : texture clouds1.jpg mask clouds1m.bmp.

• Compress the mask (eg : clouds1m.bmp) in .zip and upload both "clouds1.jpg" and "clouds1m.zip" to the directory textures of your world's FTP space.

Tutorials Active Worlds | Textures tutorials