From what I remember, if you dont take any in the in-game menu then you should have an option.
EDIT: I dont know anymore, you used to be able to just upload images in the past. You can still use a DesignerSuite Method
Take screenshot of your plane, Edit the image with text and stuff, Put the image on the Designer Suite mod, Put the image far away from your craft, Upload it.
@JakeSnakeMate thank you
put the image as the blueprint and screenshot it then
From what I remember, if you dont take any in the in-game menu then you should have an option.
EDIT: I dont know anymore, you used to be able to just upload images in the past. You can still use a DesignerSuite Method