Now this I am probably most surprised, you are able to copy plenty of stuff, but not images. You are even able to copy models as long as you give it a new different/unique name before it fully copies, but not images? I know you can go to files, but I highly doubt people would think about it unless someone mentioned it.
in other words, having the ability to copy images you make (if there actually already is, but I didn't realize) would be very nice