That's just it, just because it's the "closest" match does not mean that it's actually close to matching.
The shape of the eyes and mouth openings in Death's mask don't match the apparent shapes of those features on the plane. And the figure on the plane seems to lack the red "spade" on the forehead.
This really is Rorschach test. It will look like whatever you want it to be.
The good news is that area on the AH P-51 is so small that if V just drew blobs in the right colors, it will look like a dead on match for the reference photo.