Kallinikos studied many types of iconography, like fresco and encaustic painting which he learned in Mount Sinai during his visit in 1967. He started by painting with oil paint, while he later used more often eggs for the mixing of the colours. Paintings of his exist in many churches and monasteries in Cyprus and in other countries. His most important murals with the fresco technique are situated in the katholikon of the Stavrovouni Monastery. From 2006 and after he hpainted only using the encaustic painting technique. Moreover, his works have been featured in various exhibitions worldwide.