I think your colors are off on the underside. The white area you have is actually BMF on the model on Bud's site. Also he uses more of a faded lichblua or a grey underside, you have that green/grey (never sure of its name, maybe Hellblau?)
And... this is purely a suggestion, take it or leave it, but take the layer that has the brown camo stripes on the fuselage, and try playing with the layer options. Try reducing the opacity (if it's 100%, try 80%) or the filtering ("Normal" is usually best, but sometimes luminosity or multiply can be good).
I actually like the way that looks, though, and am going back to edit my 190A to reduce the rivets so they are more like yours.