Once you have put your skins in one of the folders and thereby made them available to SkinShifter, you can simply press
O while in-game to open the skin selection screen:
There, you can preview all available skins by clicking on them in the list on the left side. The selected skin will be shown on the player model on the right side. If you‘re satisfied with your selection, you can simply click
Apply to start wearing the new skin. In case of a multiplayer game, all other players will also see you wearing the new skin. In order to revert to the default skin which you have uploaded to Minecraft.net, just click the
Revert to Default button in the skin selection screen. It‘s that easy!