So I'm airbrushing my first plane and the RLM 76 came out beautifully. I started painting yellow on the nose and it looks awful! Its dark and greenish looking. Questions: Should I paint white first and then paint the yellow? On the Top piece I freaked out and while the paint was still relatively wet I freaked out and started rubbing the paint off with a paper towel. How should I prep this to paint again as the paint wasn't completely removed? On the Second part, I left it as is....should I paint white over the dull yellow and then repaint or strip this? I'm leaning strip once I figure out how because I'm afraid I'll start to lose detail if I put a couple coats of white on top of the dull yellow and then a couple coats of yellow over the white. Wordy, I'm sorry but I would love help!

Yellow and red paints have very little "body," so tend to allow the underneath colour to show through. It always pays to undercoat, where these two colours are to go, with white.
Edgar