We usually do the hard work of fining the images for the puzzles you add to your collections. But some times, we can't find them automatically.
When this happens, we will try to find the images by hand later but you can do the same thing we do and help us out.
Those are the basic steps we use when the system doesn't find an image automatically. And we often use these steps if the image that is uploaded or found automatically is too small or not very good quality.