The success in 1976 marked a decisive breakthrough for Sewina’s position in the Polish non-professional art practice. He has maintained the versatility of his initial art palette and later expanded it to include metalworking and photography. His paintings and wood carvings are qualitatively among the top of Polish naive art. His better graphic works are beyond that level.
Sewina’s graphics cover a wide area: portraits, miner’s and farm life, nature, religious images, sporting events, music performances, circus, cabaret, etc. In 1984 and 1986 he was highly admired for his extensive series on the Olympic Games and the World Championship football.