How to Make a Good Confession
91 Q. How do you present yourself to the confessor?
A. I kneel at the feet of the confessor and I say: "Bless me, Father, for I have sinned."
92 Q. What do you do while the confessor blesses you?
A. I humbly bow my head to receive the blessing and I make the Sign of the Cross.
93 Q. Having made the sign of the Cross what should you say?
A. Having made the sign of the Cross, I say: "I confess to Almighty God, to blessed Mary ever Virgin, to all the Saints, and to you, my spiritual Father, that I have sinned."
94 Q. And then what must you say?
A. Then I must say: "I was at confession such a time; by the grace of God I received absolution, performed my penance, and went to Holy Communion." Then I accuse myself of my sins.
95 Q. When you have finished the accusation of your sins what do you do?
A. When I have finished the accusation of my sins I say: "I accuse myself also of all the sins of my past life, especially of those against such or such a virtue" — for example, against purity or against the Fourth Commandment, etc.
96 Q. After this accusation what should you say?
A. I should say: "For all these sins and for those I do not remember, I ask pardon of God with my whole heart, and penance and absolution of you, my spiritual Father."
97 Q. Having thus finished the accusation of your sins what remains to be done?
A. Having finished the accusation of my sins I should listen respectfully to what the confessor says, accept the penance with a sincere intention of performing it; and, from my heart, renew my act of contrition while he gives me absolution.
98 Q. Having received absolution what remains to be done?
A. Having received absolution I should thank the Lord, perform my penance as soon as possible, and put in practice the advice of the confessor.
Next - Catechism of St Pius X - The Sacraments - The Sacrament of Penance - Absolution
Pius X, Pope St.. Catholic Catechism of Saint Pius X (1908) (pp. 85-86). Kindle Edition.