Nice work on Me-262 "contour-wise".
But I have some significant concerns overall, though.
One is that it seems that it looks that although the plane seems to be in "generic color/natural metal", You've used NINE shades of it (sometimes looking to be applied bit randomly) plus there are still stray pixels in at least two more shades (making it ELEVEN). Sorry, but that's just awfully too much (and impractical). I've never used more than five shades of any color, with four being usually enough (and the fifth - if ever used - only for literally seveal pixels per whole plane). (see note below)
Another thing, but that's just my personal idee fixe, is that panel lines in some places would look better if they were made more "regular" and parallel to (black) contours - end less blurry on the bottom part of the wing (most noticeable I pointed with grey arrows).
I would also suggest that You make the weels "typical" way - with the "rubber part" outline in black both on outside contour and inside contour (and I think that "metal" part of the nosewheel was relatively smaller).
Minor nit-pick would be to outline the cannon barrels in darker shade (maybe even black).
Ta-154 I didn't check on that, though.
Note - actually some of my blanks have two sets of grey/metal on it, but that's one set "overall blank grey" (for areas that are due to be repainted in various ways) and one set "natural bare metal" (for places that are
supposed to remain unpainted) - it can be seen on some drawings of large airliners, with "natural bare metal" being used in places like engine intakes, leading edges etc. - still, no more of 5 shades of each is used and there is always a clean division between area using one shade set and another.
(anyway, as far as I remember, there weren't many "natural metal" parts on real-life Me-262's in combat units).