Veneers come preshaped.
1) Glue the veneers
2) Place them on top of the foam mold
3) Put them both into the vacuum bag
4) Evacuate the air using the hand pump
5) Let dry for 8 hours.
Once the glue has dried, the project can come out of the bag and scraped/sanded flush... apply a protective coating to the board, attach the appropriate hardware (wheels, trucks, grip, etc) and RIDE!