I would only use stain on a wood model.
He used oil paint on a wood panel.
Primer, type depends on the type of wood.
Acrylic paint is used on wood crafts. Go to a craft store and they have hundreds of colors.
Oil paint on wood panel.
You should apply paint only for the uses recommended on the can. READ the instructions.
you should not paint wood -- you should stain it to show off its natural beauty. If you must paint it, however, you can use any quality latex paint or, if the wood will be exposed to weather, oil-base paint. In either case, bare wood should be primed first. If the wood will be exposed to weather or damp locations, it's a good idea to prime all sides, not just the one that shows.
use wood paint from Africa
I would use an oil based paint with UV inhibitors, the UV inhibitors protect the color(s) from the Suns rays, allowing you to retain the brilliance of said colors.
First of you are going to want to sand down the wood, this gets off all of the previous paint and readies the surface for a new coat. You can choose to stain it with any color of stain or you can use an exterior paint.