After 29 years of rubbing off oxidized paint, the primer is finally showing through. It's time for some new paint and I'd like to try the spray-can method. I've ordered some acrylic enamel paint from ipd in the original paint code (201, beige).

Now what?

Spray a new coat of primer on what's left of the existing paint, or rub it completely off first?

Spray on several coats of the new paint and leave it like that? How heavy per layer - complete gloss for each layer or only the final layer?

What about clear-coating? The car did have a factory repaint of the driver's side some 15 years ago and the clear coat is peeling off, revealing a very dull coat of paint beneath the shiny clear. Should I just spray a few dull layers followed with a quality clear?

I know that a professional would do a better job than me, but I don't have the money for that. I want it to look decent from a distance, not showroom quality.

Thanks.