Hi straydogs. I can only tell you how I do it. I'm no expert, so you may need further help. I right click on the image I want to save to a folder on my computer, then select "save picture as" and name or number it...The I upload it onto tineye I dont know what format the pictures are in for this quiz you're doing. Perhaps bibble or one of the other maybe able to help you. Good luck with it x
If you are trying to match pictures that on a webpage (including some photo sites like photobucket but not flickr)and you are using Firefox then the TinEye add-on
lets you right-click on an image and select the "Search Image on TinEye"; that uses the image directly without you having to download it to your computer followed by uploading it to the tineye site.