How to create a custom skin (or paintjob) for an airplane in Phoenix RC Simulator 5.5

I wanted to make a new skin for a Flite Test model in Phoenix RC Flight Simulator, but had trouble finding a good tutorial. So once I figured it out, I made this tutorial. Enjoy! Leave comments if you have any questions.

Phoenix RC Flight Simulator:
http://www.phoenixsim.com/

Flite Test Youtube Channel:
   / flitetest  

Flite Test Store:
https://store.flitetest.com/

Flite Test models for Phoenix RC Simulator:
http://forum.flitetest.com/showthread...)

Paint.net software:
https://www.getpaint.net/index.html

My desktop wallpaper:
  / 458382068293859217  

Screen Capture done with Open Broadcast Software:
https://obsproject.com/download
(I used OBS Classic, not OBS Studio)