Heyo~ The thing I think you're talking about is a preset?
The images you provided were from a preset, however, markings are in-game and despite being make by someone, they can only be seen if downloaded by the other person and that other person would also be able to use them, however, a preset can be seen (once they have downloaded it) but only can be used by the person that made it, I think what you are in need of is a preset rather than new markings for your character. c:
Hope this helped you. c: