Hi!
It's perhaps fault of the base drawing, but the shading looks bit dated. Also, something strange happened to the exhaust and the black line that separated engine cowling from the rest of the fuselage was black for a reason.
And some colors on the panel lines extend much further than on the base surface (for example in some places panel lines are green where everything around them is brown and vice versa).
It would be also nice if You had sorted the issue of anti-aliasing on the text part (
http://shipbucket.com/styleguide#61 ).