Here are the steps to do a pirouette:

1. Start in fourth position with both legs straight and one foot in front of the other.
2. Do a plié, bending your knees without lifting your heels off the ground.
3. Push off into retiré position, lifting your back leg and placing your foot above the knee of your straight leg.
4. Turn on your supporting leg, keeping your arms open and your head focused on one spot.
5. Finish the turn by closing your arms and bringing your feet together.

Remember to spot - meaning you should pick a point of reference before your spin that your eyes can come back to .