Father Alar gives this further direction: With the situation in various places and dioceses, if you are not able to have a priest bless it, “the Church allows you to invoke a blessing yourself. The Catechism of the Catholic Church [in 1669] teaches that lay people, on account of their baptismal priesthood, may administer certain blessings.”
How to invoke such a blessing upon the image of Divine Mercy in this circumstance? He instructs: “While making the Sign of the Cross over the image say, ‘O Lord I seek your blessing upon this image, Father, Son, and Holy Spirit. Amen.’”