Ah can someone help me!
I am on 4.1.4 and I did everything perfectly. All images are in the right folders/path but for some reason, I can't get the pictures to actually show. Users can pick their flag/option and it just shows the name, not the picture. Any ideas?
-----------EDIT--------------------
NVM! Got it working.
My problem is I had the images under images/buttons/flags but it had to be under YourStyle/buttons/flags
!