"To ask something of the Blessed Virgin Mary is not the same as asking God. She knows what she has to do about my small desires, if she must say them or not...Finally, it is for her to see, not to force God to fulfill me to leave him to do his will" (St Therese, Advice and memories 49).
Previous post on the subject including St Louis de Montfort's prayer of Consecration to the Immaculate Heart of Our Lady HERE
Solemn consecration prayer, composed by Venerable Pope Pius XII HERE
On Mary's Crowning HERE