ohms
Or maybe I should change my gloss? I use Humbrol Gloss Cote.
I don't do cars, but I used to do commercial spraying for Norton motorbikes & Jaguar.
The key is preparation.
Get your target/car body as smooth as possible, key with 0000+ wet & dry or those nail buffing sticks ftom dollar/beauty shops.
Then prime with a good auto or lacquer primer. smooth again with 0000+ wet & dryetc.
Dust coat, (very light coats, to key the paint), then progessively build up the finish.
When you think 'just one more' stop.
Allow to harden, 1-7 days, depending on the paint.
Consider
Hiro Boy automotive finish Paints, formulated for err car models, but it depends what you have available to you.
Then don't sand! Unless you have orange peel or runs like pimples.
Consider car finishing compounds, Nova/Novus(?) or T-cut or similar, & polish out.
Touch up if necessary. This is a normal part of finishing.
Definately bin the Humbrol, it's difficult to spray, will yellow over time, & I had more grief with this this than any other finish.
My favourite at the moment is Galleria acrylic, Mat, Satin & Gloss, self leveling, easy to spray, forgiving if you over-cook it.