1. Click Images
2.

How to upload to SL :
1. Open .PSD file
2. Save as 512x512px
3. Save as ".tga"
4. Open SL Viewer
5. Avatar - Upload - Upload Images (every viewer is differt. i use 'Firestrom')
6. Make a new skin, shirt, or anything you want
7. Edit - Change Fabric to Images you upload before
8. Done