Painting Tail lights with airbrush?

I tried hand painting a large tail light, but got uneven surfaces :disappoin I was wondering if anyone has tried using the airbrush to paint these things and how the results were.

humm if you paint from the inside (it always should be painted on the inside) you can have an uneven paint, it will always look fine on the other side.

I always handbrush light

hmm then I may be applying too much paint :p

usually, 2 "light" cost is fine

I use tamiya clear red and Humbrol clear orange (no reason, I just have them :D)

I airbrush taillights.

Yeah Airbrush em, it's the best way to go. Especially if the colours are pretty simple.