The pattern of Reformed worship can be summarised in five Cs.
But the main thing to remember is that worship has a shape, a narrative. It not a collection of prayers and songs, with a talk, without a shape or purpose. Rather we are called into God's presence on the first day of the week and we respond in song, in hearing, in eating and drinking and prayer.
Here are the Five Cs.
Call - God calls us to worship Him, and we respond with a hearty "Amen". We are here because of His gracious invitation. Our response is of praise and adoration with psalms and songs.
Confession - next we repond to God and kneel together to join in the confession of sin, then we stand together to hear the promise of forgiveness.
Consecration - as we progress through the service we confess our faith together with one of the historic creeds (Apostles and Nicene), and then hear the Scriptures read from both the Old and New Testaments. This leads to the sermon where we are taught how to apply the Word to our modern lives. We are led in prayer and then join together in the Lord's Prayer.
Communion - next we come to the Table. Each week we receive the sacrament in bread and wine. We are fed at the King's Table.
Commission - finally we are sent out into the world to be salt and light in the city, to work, raise our children and live out the faith as we witness to Christ.