After 33 days of preparation, reflection, and self-discovery through the guidance of Mary and the Holy Spirit, the time has come to officially make the Act of Consecration.

1.On the day of consecration, either fast, give alms, or offer a votive candle for the good of another (or all of the above); do some spiritual penance and approach consecration in the spirit of mortification.

2. Now go to Confession (or, if that is not possible, go during the 8 days prior) and then receive Communion with the intention of giving yourself to Jesus, as a slave of love, by the hands of Mary.

3. Now pray the words of the consecration. Copy them and have them with you at church, read them after the Mass (in front of the tabernacle would be nice), and sign your copy of the Act of Consecration.

Taken from page 20 in Saint Louis-Marie de Montfort book : https://www.quies.org/True-Consecration-33-Day.pdf