How to Start Canna From Seed

I had some happy Canna Plants this year and collected and shared oodles of seed.
But I didn't know what to do with them. I sent out the scout and came back with this information from one of my Group Buddies.
This is not my personal information

How to grow Canna from seed:
Scarify the seeds in January. Take the seeds, one by one, and rub the ends of the seeds on the sandpaper until you can see a small section of the white layer.
Place the canna seeds in the glass bowl. Cover the seeds with warm water and let them sit for 24 hours.
Fill the nursery tray with vermiculite. Dampen the vermiculite until it is moist, but not soggy. Remove the seeds from the bowl of water and plant them ¼ inch deep in the vermiculite.
Place the nursery tray in a warm area indoors. and keep the vermiculite moist during the germination period. The seeds will germinate in about 7 days.
Move the nursery tray to an interior location that receives sunlight. Check the vermiculite often and do not allow it to dry out. Rotate the nursery tray as needed, to prevent the seedlings from growing sideways.
Transplant the canna seedlings when they are six inches tall. Fill the flower pots with moistened potting soil, and then plant the canna seedlings into their individual pots.
Place the flower pots in a sunny window. Keep the potting soil moist, and continue to rotate the plants periodically.
Fertilize the seedlings with a granulated, organic fertilizer. Follow the directions on the package.
Move the flower pots outside after the danger of frost is past. Set the plants in a partially shaded area for two weeks to "harden" them off before their final transplant.
Plant the young cannas in a sunny location. Using a garden trowel, dig holes the same size as the flower pots, 18 to 24 inches apart. Dampen the holes.
Place one hand over the soil in the flower pot, and turn the pot upside-down. Lift off the flower pot, then lower the soil ball into the prepared hole.
Pat the dirt around the canna until it is firm and any air spaces are filled. Water the ground around the new plantings.