The first thing you will need to do when you build an aircraft is to set up the directory structure in the PLANES directory of your current X-Plane folder (note that with the constant updates, you may have more than one X-plane folder)
As a general rule, I keep my development aircraft in a separate folder [Homebuilt]. You will require an AIRCRAFT NAME FOLDER
Inside this folder you should place four more folders (although
these are not 'required' it is a good practice to follow)
AIRFOILS
BITMAPS EXTERIOR
BITMAPS INTERIOR
SOUNDS
Make sure you get them spelled correctly or some parts of the aircraft may not function correctly.
Go to STANDARD and then to WING1. The following menu should pop up. There is a lot here, but it isn't very difficult to handle: