Below is shared a brief background of the imagery of this beautiful Ikon:
In the Christian tradition, theologians often remark on the fact that Mary’s response: “Let it be done to me according to your word”, caused the Incarnation to take place, and so her words made Christ present, just as during the mass the priest’s words of consecration make Christ present in the Eucharist.
It is because of her role as Mother and Priest, offering her body and blood for the salvation of the world, as Mother of the Christ, the Holy Lady Mary can be called co-redeemer of the world.
Many pious traditions have evolved over the centuries concerning Mary and her socioeconomic status, and whilst they may have been well intentioned they might not fully reflect historical evidenced truth. For example, in a world dominated by wood and stone, unless Joseph and Jesus were really bad at their "day jobs" as Carpenters, Mary could have been a very wealthy woman who could have paid or bribed the Romans not to crucify Christ (taking a very literal reading of the Gospels). However, she did not do this, she accompanied her son to the Cross and supported him as best she could. Mary was the minister of the Incarnation and bore witness to the Salvivic Action of the Christ on Calvery.
The Ikon above clearly shows Mary dressed after the fashion of an Orthodox Priest, and clearly as indicated by her clothing and hand / arm positions she is portrayed celebrating the Eucharist.
Some Prayers to Mary
Hail Mary, full of grace, the Lord is with thee;
blessed are thou among women, and blessed is the fruit of thy womb. Holy Mary, Mother of God, pray for us thy children, now and at the hour of our death.
Hail Holy Queen
Hail, holy Queen, Mother of Mercy, Our life, our sweetness and our hope. To thee do we cry, poor banished children of Eve, To thee do we send up our sighs, Mourning and weeping in this vale of tears. Turn then, most gracious Advocate, thine eyes of mercy toward us, And after this our exile, show unto us the blessed fruit of thy womb, Jesus.
O clement, O loving, O sweet Virgin Mary!
Pray for us, O Holy Mother of God,
That we may be made worthy of the promises of Christ.
Prayer to Our Lady of Guadalupe
Dear Mother, we love you. We thank you for your promise to help us in our need.
We trust in your love that dries our tears and comforts us.
Teach us to find our peace in your Son, Christ, and bless us every day of our lives.
Help us to build a shrine in our hearts.
Make it as beautiful as the one built for you on the Mount of Tepeyac.
A shrine full of trust, hope, and love of Christ growing stronger each day.
Mary, you have chosen to remain with us by giving us your most wonderful and holy self-image on Juan Diego's cloak. May we feel your loving presence as we look upon your face. Like Juan, give us the courage to bring your message of hope to everyone.
You are our Mother and our inspiration. Hear our prayers and answer us.
From a 'Liberal Catholic' Service dedicated to Our Lady
P. O Lord Christ, who for her wondrous humility hast exalted the holy Lady Mary among the hosts of heaven; grant that we, Thy people, may so follow that her most noble example, that we may at the latter end be found worthy to serve Thee even as do Thy holy Angels; Thou who livest and reignest in glory for evermore. R/ Amen.
P. O Thou Most High, Who art the deepest Mystery, may we open our hearts to Thy Wisdom, that was before heaven and earth existed, Thy Wisdom which is the eternal Virgin Mother of the Light. May we venerate Divine Motherhood in all creation and may all our actions bear the mark of Thy Wisdom and Love. Through Christ Our Lord. R/ Amen.
R. Teach us O Lord, to see Thy life in all in all the peoples of Thine earth, and so guide the nations into the understanding of Thy laws that peace and goodwill may reign upon earth; through Christ our Lord. R/ Amen.
There are of course many other beautiful prayers to the Blessed Mother, many of which can be found using a simple internet search. Their use, and any spirituality drawn from this exposition on this Ikon is purely subjective and you are encouraged to form your own opinions concerning the nature of the Divine Mother, and whether or not Mary was the Ultimate Priest, after Christ.