For PC:

1. Right Click on enlarged picture and select "Save Picture As".

2. Go to your "Control Panel" and then into "Desktops and Screensavers".

3. Select your newly saved Glass Cactus Wallpaper and press "OK".

For Mac:

1. Drag and drop enlarged image onto your desktop.

2. "Control-Click" on your desktop and select "Change Desktop Background" from the drop-down menu.

3. Select "Choose Folder" and select your new Glass Wallpaper from the location it was dropped.

3