Hamis, who is better known in art circles as 'Ochu', said recently his portrait, drawn by the German artist, is a sign that he is doing well in art circles.
Sommer, who runs a humanity project in Tanzania and India, recently visited Dar es Salaam, drew 'Ochu' portrait, and posted it on her social media platforms.
Her projects provide school children with some of their needs.
''For Seona Sommer to draw my portrait is something which I did not expect. To me, it is a great honour and I am excited with that honour.''
''It shows that my works are appreciated by many people both locally and internationally,'' he said.
'Ochu', who admires the works of United States of America (USA) acrylic painter, Nick Sider, is also the 'Kili Canvas' competition's winner.
According to her biography, Seona from Cologne, Germany is a primarily self-taught contemporary figurative artist.
Her compelling portraits promote humanity and diversity and offer fascinating insights into people's souls.
"She sees herself as a global citizen with a strong interest in international collaboration, she strives to tear down the borders and overcome distances with her artworks.''
''She explores the great variety of different cultures and individual characters and she is also a strong advocate of humanity,'' part of her biography revealed.