Custom thumbnail issues

So this is my first time creating a CC so I stuck with something simple and did a tattoo. I checked and the tattoo does show up in the game (on both genders) but the thumbnail is the one generated by the game but the female hair covers it, so naturally I created my own thumbnail. I followed the instructions for how to place it and everything but it isn't showing up in the game and it still remains as the default one set by the game.

I tried checking other threads and I've clicked the 'Clear Thumbnail Cache' multiple times and I've also tried deleting the 'localthumbcache' repeatedly but nothing seems to be working and I'm still not sure what the problem is.