To upload your skin to Minecraft and start using it: Launch Minecraft and select Skins from the main menu. Select Browse skin. Navigate to the Downloads folder or to the folder where you saved the .png file and select the new skin.What is a skin in Minecraft?
Skins refer to the textures that are placed onto a player or mob model. Skins are divided into areas that act as the surface area of the character (for example, the front head area, left leg area, etc.).