That is a step forward, but still significant way to go.
Look at the smoothnes of curved lines in Radome's drawing, details like frames of canopy, machine guns or antenna mast (3-pixel thick when possible: black contour - color - black contour), and where to use black lines, and where not.
Actually, Your Ju-88 reminds me graphics in
Aces Over Europe (computer flight sim of 20 years ago).