Creating a new look from the very beginning.
1) Open the console (~)
2) Enter the command: SLM 14
3) Complete character creation.
4) in the console, select "NPC" ID (xxxxxxxxxx)
5) Enter the command: capp
6) Press Enter.
- Done, the appearance from your character has been transferred to the NPC.
  (save and exit the game so it doesn't reset)

For copying any appearance
go to any NPC you like:
1) Enable side view
2) Select the NPC and write down its digital ID number
3) click on your character and NPC_" (00000014) [EP] should appear.
4) Then enter in the console: capp (ID of a minor character, without parentheses)