How to install for Winddows:

Step 1: You download the skin
Step 2: You open: Minecraft Launcher
Step 3: You go to: Minecraft Java
Step 4: You go to: Skins
Step 5: You click on: New skin
Step 6: You give the skin a name, I name it: Noob but you can give it anoter name
Step 7: You click on: Upload skin file and select: Noob in your downloads
Step 8: Click on: Done and you are a Noob

How to install for Mac:

Step 1: You download the skin
Step 2: You open: Minecraft Launcher
Step 3: You go to: Minecraft Java
Step 4: You go to: Skins
Step 5: You click on: New skin
Step 6: You give the skin a name, I name it: Noob but you can give it anoter name
Step 7: You click on: Upload skin file and select: Noob in your downloads
Step 8: Click on: Done and you are a Noob