As a teacher Scherwinsky wrote textbooks on craft design and also participated himself in design competitions and exhibitions, winning bronze medal at a craft exhibition in Riga in 1883 and a silver medal at the All-Russia Exhibition 1896 in Nizhny Novgorod. Among his pupils were the artists Janis Rozentāls and Vilhelms Purvītis. He was an appreciated teacher and received several gifts from his students on his 25th anniversary as a teacher; after his death his students also financed the repatriation of his remains to Riga and his gravestone with a commemorative inscription.
Architecture
Scherwinsky was also active as an independent architect in Riga. In 1899 he designed, together with Alfred Aschenkampff, the first house in Art Nouveaustyle in the city. The two architects also designed the main layout of Riga Anniversary Exhibition of 1901.