Few steps.
A recent work I did
Here I show few steps. They are divided in 5 steps and the main idea is to show the importance to know the aircraft structure before you start to draw, paint, illustrate or generate it in a 3D software.
Steps
1- structure lines (3views)
2- exploded view
3 - wind model photo
4 - 3d work
5 - rendered/finished illustration
More at: http://duhraviationart.com