He began to exhibit with the Incorporated Society of Artists from 1766 , became a fellow a year later and a director in 1771 .
Green trained under Robert Hancock , a Worcester engraver , after which he moved to London and began working as a mezzotint engraver .
Green began to exhibit with the Incorporated Society of Artists from 1766 , became a fellow a year later and a director in 1771 .
Green trained under Robert Hancock , a Worcester engraver , after which he moved to London and began working as a mezzotint engraver .