Few things.
"K" still appears to be the previous "red" color. It should match the tail stripes.
Roundel on the side, the profile shows a SAAF roundel. Is the standard British one correct? Was this a Med bird? If so its likely to have had the SAAF Roundel. And is the current one done correctly, the red to blue purportions seem off.
Roundels above the wings? Below?
Invasion stripes, try using 50,50,50 for the black. And try 234,244,242 or something close for the white there and on the tail. Not quite as "stark".
Wish I had time to do this again.
Cheers.