Oh no - this one's a stinker! - not really. I suppose you what to know how to get it on the desktop now. There are more that one way to skin a cat when it comes to setting the wallpaper / bcakground as your desktop. 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! Then set the desktop background using your computers OS's desktop or display control panel and select the image you just saved.
Another way is when the full screen wallpaper has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. It'll come to you when the time is right. I know you can do this. I bet you already know. I'll button it now.
Return to wallpaper thumbnails.