Careful with this one - can be slippery when wet. Do you need to know how to put this on your desktop? To get your chosen wallpaper to be set as your desktop background can be done in many ways.You can either right click the background below and then choose 'save target as...' (IE & Opera) or 'save link as...' (Firefox). If you do this - remember where you saved it! Next goto where you set the desktop background for your particular computers operating system and select the image from the location where you saved it.
Another way is, when the full screen image has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When you're ready - you'll know what to do. I know you can do this. In fact you probably already know. I'll be quiet then.
Return to wallpaper thumbnails.