There may already be a pattern for this prayer, which I've pasted the verses to below in full...but you may have to use a font generator to make your own pattern if it cannot be found.
Here's a link to a few:
Lord, help us to remember when we first met and the strong love that grew between us.
To work that love into practical things so nothing can divide us.
We ask for words both kind and loving
And hearts always ready to ask forgiveness as well as to forgive.
Dear Lord, we put our marriage into your hands. Amen.