2-pak paints will always come up better, but does require the full setup. And they'll kill you.
If you're going rattle-can job, then prep, prep, prep.
If you can leave the panel in the sun or under a heat lamp until it's warm to touch, that's good.
Stand the can in boiling water until the can is warm as well. Shake it like it owes you money.
Mist coat first. This is literally as little as you can detect on the surface.
Follow the instructions for recoat-times, your next coats can be full thickness. But many light coats beats few heavy ones.
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