How do you celebrate the first feast day of Blessed John Henry Newman?

With a prayer!

O God, who bestowed on the Priest Blessed John Henry Newman
the grace to follow your kindly light and find peace in your Church;
graciously grant that, through his intercession and example,
we may be led out of shadows and images
into the fulness of your truth.
Through our Lord Jesus Christ, your Son,
who lives and reigns with you in the unity of the Holy Spirit,
one God, for ever and ever. Amen.

The selection for the Office of Readings from the Common of Pastors is here.

And the Prayer for his Canonization:

Eternal Father, You led John Henry Newman to Follow the Kindly light of Truth, and he obediently responded to your heavenly calls at any cost. As writer, preacher, counsellor and educator, as pastor, Oratorian, and servant of the poor he labored to build up your Kingdom.Grant that through your Vicar on Earth we may hear the words, "Well done thou good and faithful servant, enter into the company of the canonized saints."May you manifest your Servant's power of intercession by even extraordinary answers to the prayers of the faithful throughout the world. We pray particularly for our intentions in his name and in the name of Jesus Christ your Son our Lord. Amen.

John Burger on the National Catholic Register, posted some other ideas for celebration.