Ah - good choice - this is one of my favourites! Do you need to know how to put this on your desktop? There are a few ways to get the wallpaper to be your desktop background. One way is to right click the desktop background below and then choose 'save target as...' (IE & Opera) or 'save link as...' (Firefox). Don't forget where you saved it though! Then go to wherever you set the background for you particular computer / operating system and select the image.
A different way altogether is to right click the background below, from here choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. You will understand what needs to be done the the moment arrives.I think you have it in you. I reckon you know already.I'll button it now.
Return to wallpaper thumbnails.