Seal the wood with either epoxy finishing resin or polyester resin, then start on the wet and dry.... Then paint with Halfords Aerosols.
I've spent the whole of last week on a little secret project, which is a mould made from polystyrene coated with car body filler. Started with 400 grit wet and dry, then went to 800 grit. I then sprayed a thinish coat of Halfords Satin Black paint, then sanded this back with 1200 grit until there was no black to be seen anywhere. I then went to 1500 grit paper over the whole thing, then out comes the Halfords Rubbing compound, liberally applied and rubbed in with a cloth. After this, it's pretty amazing. Next out came the McGuires Mould release wax, which I built up in 12 coats, polishing each one off.
You don't have to spend quite as much effort as I did, because I'm selling the finished product, but with a little bit of effort, your model can be amazing. You can also achieve a matt finish with the same method, but without the wax and using matt paint
The proof as they say is in the pudding, here's what was a dull front wing panel on my motorbike after just 3 coats of wax: