Looks very good overall, Fencer. I think the yellow looks fine and the adjustment in the green tones is spot on. The cowl flaps look fantastic.
There are a few issues I see keeping the skin from being truly excellent.
1. Your 12mm barrels are green.
2. The fuel triangle should be smaller and on the door itself.
3. The wings and horizontal stabs ton't mesh with the fuselage well. Add some overspray to the fuselage where the wings meet and paint the stab fairing fully green.
4. I think your exhaust stain should follow the wing curvature more - also adding smoke staining to the wing near the root will also tie it together.
5. Unlike Vraciu, I don't think the mottling is subtle at all. It is too slab like. You need more overspray, but it needs to build up gradually. Use the airbrush tool with the 9 or 11 pixel radius fuzzy circle at about 40% opacity and work in small circles and scribbles to build up the color. Also do this for the border of your top colors where they meet the underside color. If you are using a mouse, try varying the frequency of clicks while making the strokes to increase the randomness - sometimes just clicking rapidly in the same general area works wonders. I think you'll find the result much closer to the real aircraft.
Start by mimicking the area in the photo and work out to ensure a consistent look for the entire fuselage.
Here's an example from one of my 109's to illustrate what my mottling looks like up close.
Keep plugging away at this one. It is close to being superb.