This aircraft may be a huge money pit for the U.S., but it sure looks cool!
The alien head was done using a drawing by Alex Toth as reference. Studying the greats!
I think I need a lot of practice on lighting and shadows. Here is a recent attempt!
I made this piece from a sketch that I pulled out of one of my old sketchbooks. Considering that I just snapped a picture of the messy sketch with my iPhone, and then used that file to edit, I think the finished piece turned out pretty good!
These sketches were made from various reference photos that I found in a book about truckers.