This is an easy-to-make mermaid jigsaw puzzle with only a few puzzle pieces.
Use a power sander or hand sand the wood on both sides. Cover the wood on one side with clear packaging tape to provide the saw blade with some lubrication as it cuts.
Make a copy of the pattern. After making a copy, cut around the outside edge of the pattern leaving a 1/4" to 1/2" of paper around the pattern lines.
Attach the pattern to the packaging tape with spray adhesive.
Saw the outside lines of the pattern with the #9 saw blade. Next, saw the individual pieces by cutting on the inside lines. Remove pattern and packaging tape.
Sand the individual pieces with fine sandpaper to smooth any imperfections. After the wood is nice and smooth, apply the sealer primer. After the sealer primer is dry, apply two coats of enamel letting it dry between coats. Be careful not to get too much paint where the pieces join together.