To begin with, I'm afraid that Your C-201 is misscaled (all sources I saw give the length to be 13,8m, which is ca. 305 pixels, and on this drawing it's 350 pixels long - nearly 16m long). Besides that, it's also rather crude styllistically. Horizontal stabilizer is full of double black lines (or rather whole black blotches), there are "heavy corners" ( http://shipbucket.com/styleguide#21
) in some places, curves/arcs also don't look good (for example, upper contour of fuselage looks like it was "pumped up" in the middle, instead of being smooth arc all the way), the antenna masts IMHO should be three pixel thick (and forward one should be outlined in black), and finally, the window frame should be 3-pixel thick instead of just two (it's thick enough to be that wide), plus the forward contour of the windshield should be black because there is a frame there too.