Step 1: Matt Thompson Reproduction Fish come with a small flashing extending out of the parting line. This can be easily trimmed with a pair of heavy shears.

Step 2: A knife works well on the tops and sides, but the shears will be better for the fins.

Step 3: Once the flashing is shaved back, use a rotary tool with a Kutzall drum to bring the flashing down to the mold line. For the tight places, such as the base of the fins, use a cone-shaped bit.

Step 4: A small round and flat file will do well to further clean around the fins. Sand the flashing with 80 grit sandpaper to knock off all of the small burrs.

Step 5: Grind out the interior of the mouth. Don't go below the lip line of the fish. Sand mouth interior.

Step 6: Grind out the eye socket to match the size eye you want to use. Install the eye with a small amount of epoxy putty or Bondo.

Step 7: Cut the fins out with scissors, using a rotary tool to shape the edge. Taper the backside of the fin to give the thinnest appearance possible.

Step 8: Grind the areas that are to receive the fins so there is a neat and flush fit. Use Bondo to attach the fins. Cut away the excess before it hardens completely.

Step 9: Use Bondo or an automotive filler to finish out the seams. Smooth along the seams, the entire length of the fish, top and bottom.

Step 10: Wait about 15 minutes before going back over the Bondo with 80 grit sandpaper and start smoothing it down. As the shape nears completion, go to a finer grit (150 or 200).

Step 11: Using a toothpick, draw putty up from the base of the lip line to simulate or make artificial teeth.

Step 12: A coat of FP195 Fiberglass Primer can then be applied over the fish and any further pin holes plugged. Allow the primer to dry overnight. The fish is then ready to paint.