For spiritual blessings and to draw the beneficial attention of Most Holy Death, say the following prayer with sincerity and then meditate in silence. You may wish to light a glass-encased white novena candle, dedicated only to Her, while you do this. You can perform this devotional work as often as you wish as long as it's done with focus and in an attitude of reverence.
Invocation of Santa Muerte
[Sign of the Cross: In nomine Patris et Filii et Spiritus Sancti. Amen.]
O Lord, before your divine presence, the Holy Father, the Son and Holy Ghost, I ask permission to invoke Most Holy Death.
O Most Holy Death, I humbly ask you to break and destroy all evil spells, evil enchantments and evil that may be present in my home or place of business. Destroy all obstacles and bless my home and place of business with your holy presence. Bestow upon me your love, prosperity, health and well-being. Blessed and praised be your kindness, Most Holy Death. Amen.
(adapted from a prayer in The Grimoire of Santa Muerte, Sophia di Grigorio)