Question: Foam painting

By using paints that are compatible with foam and have a glossy finish. You also need to fill in the foam surface is if isn't already. There are plenty of hobby paints that are foam compatible. Check with your local hobby shop. To get the best finish, you will need to spray the paint rather than brushing.

Cover with solite first.

Fill it with lightweight spackle or Model Magic Filler. Dr.1 Driver "There's a Hun in the sun!"

What is the type of plane should be the first question? If it's a foamie made with either fan fold or Depron just clean with achohol and spray with Krylon Short Cuts. Found in any art supply or hobby store.

Lightweight tissue applied with wallpaper paste or thinned PVA adds very little weight and gives a good surface for painting.

HTH

Malcolm.