As was characteristic of Baroque artists, Ackermann used printed pattern sheets in his work, yet did not copy them one to one, instead freely and creatively using different motifs by combining them, sometimes in one way and sometimes in other ways.

Hence, we find a familiar flower blossom from the Simuna Church retable, for instance, on the cornice corbels above the Järva-Madise retable columns. On its cornice we find a garland formed of large and small flower blossoms and various leaves and vines that is familiar from the predella of the Vigala Church retable. The auricular ornamentation on both sides of the retable’s columns and the flower bouquets woven into it are also found on the Märjamaa Church retable created by Ackermann. Similarly to Järva-Madise Church, the Märjamaa Church retable also consisted of a single storey. Its top was decorated with a flower garland and a corbel in the shape of the head of an angel with spread wings. A statue of Christ the Invincible stood on the corbel flanked on both sides by figures of angels.

Christ the Invincible and the figures of angels that crown the Järva-Madise retable resemble Ackermann’s statues on the retables of Martna Church and Tallinn’s Cathedral in terms of their carving style and the way in which they are depicted.