Hi,
I have a few small scratch down to paint (black) in the driver door (all the scratches are close to each other). I tried the touch up paint, scratch kits, etc., but i am not happy with the outcome. Still looks lumpy. I have tried to fix it but unsuccessfully.
I am thinking in trying to use the small spray gun to paint the panel. I am handy but never done this. Is there any information you guys can lead me to, video, or instruction in how to go about doing this?

Any information appreciated!!