How to use Photoshop to Create Textures With Alpha Channels for Second Life

Step 4 Create an Alpha Channel

Press Q to switch back to normal mode. The quick mask will become a selection. You can always edit this seection by pressing Q again. Go to the channels window (usually the tab next to layers) and press the "Save Selection As Channel" button. It looks like a grey square with a white circle. A new channel should appear called "Alpha 1." You now have an alpha channel. You can edit it directly by clicking on it and modifying it like a quick mask.