I used pieces of left over shingles, attached them together.
Used Gesso ( 3 coats)
Used Acrylic, and painted these daffodils, after the ones I had in the garden.
The finishing had to be done with medium gloss varnish , the one that does not yellow, and
is anti-mildew. That last one, is very necessary, and will last for at least 7 years, hanging outdoors.