1. heat plastic in a Pyrex cup in the microwave to a temperature that pours easily (IE thin syrup or 280 degrees)
2. I use a glassy surface - ceramic floor tile - that can take the heat
3. tilt the tile or glass surface, pour
along the top letting it form a thin coating
4. pour the same or different color across the film, but inches away from the top. The tail is the band near the top and the thicker 2nd layer/pour will be the body
5. cut the shape and size you want with a box cutter razor blade
6. holding the shape by the thin 'tail', dip the 'body' in heated plastic until the body is thick enough - about 1/8" (an example is how candles were made the old fashioned way - dipping to make the candle thicker).
Note: plastic that is too hot will melt the body rather than make it thicker and if so wait until it cools a bit
7. have a shallow dish of water handy to cool the body in order to start on the next lure.
8. the tail can be shaped further with the blade using the glass or tile as a cutting board
Old plastic can be reheated, including used lures. Minnow grub:
The ways to use them has been posted.