Occasionally player skins will not display properly on multiplayer worlds, this is a Minecraft bug and is not caused by our content.
There are few possible solutions to this:
- The player who can not see your skin / you can not see their skin quits and rejoins the world.
- You change your skin and then change it back to the skin you have chosen.
- The player who you can not see the skin of changes their skin and changes it back to the one they have chosen.