Good tech. Very colorful. But it is very difficult to recognize geometry of the aircraft.
I think .. the left and right sides are not aligned with a center. I advise you ... first draw a simple box, then a simple geometric shape - then draw the final shape.
here is my vision of mistakes
About model itself, is very good! I would not have the patience to draw this all. I feel a special attention to the details. Engines, pilot glass, small things - this is beautiful.
This is very good drawing, mr. engineer of the vessels of the future.
Keep the work up!