Jadehawk,
Really nice work!


Congratulations.
One tremendous thing about this site is the valuable help you get from the experts along the way. After you learn the tricks of line illustration and rivet making (which you do very well), the supreme experts like Blowhard come along and help you look at your art in a new way with a critical examination of light and shadow forms. IMHO this part of profile rendering is the most challenging and sets the levels. The result of their guidance is much more satisfaction for you as you learn to climb the hill!
For your consideration, I think if you examine the shape of the shadow on the lower fuselage underneath the intersection with the wing fillet, you'll conclude that the shadow there cannot be as rendered, but will curve forward and downward in a curved path as I've tried to sketch here.
In any event, welcome to the world of hill climbers!!
Joe