If I can make a couple of suggestions (easy to apply), I'd suggest that:
1 - Make the tailwheel rounder. Its lower half looks like a polygon rather than a circle.
2 - Try to angle the aircraft otherwise (a bit more nose-down). That would look more natural and less odd. You can just rotate the drawing a bit.
One other thing you might try is to treat some of the panel lines differently. Right now deep cut likes like the ailerons are the same as lines that are hardly noticeable on the real plane. Try thinking in terms of regular panel lines being lighter, engine and access panel lines being heavier, about like you have now, and darker lines to show the really deep recesses. Let's see some more
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