This reference template for the "Standard" skin should help! The transparent sections indicate the second layer. Some players also use a skin editor (although we don't have any official ones we can link). Check out our skin FAQ for more info! msft.it/6014wzlu8 ^NS
This could be happening because of how the player permissions are set. Ask your friend to double check the Game Settings, and make sure you're set to a Member instead of a Visitor. ^NS
No worries! This is usually fixed by clicking the "Go back" button when you see this screen. Once you click that, you'll see options for "Microsoft Login" and "Mojang Login." ^NS
Did you see an error about verifying game ownership when trying to play?
This is being investigated and is close to a resolution. We'll let you know when it's fixed.