In 1968 he enrolled at the Alberta College of Art (now ACAD) and in 1972 graduated with awards and scholarships. He worked as an art history researcher, interviewing and recording famous artists of Alberta’s formative years, including Janet Mitchell, Marion and Jim Nicoll, Illingworth Kerr, and Wes Irwin, to name a few. In 1973 David worked as a medical graphics artist for the new Faculty of Medicine at the University of Calgary. 1974 saw him receive a Canada Council grant to create images inspired by historical remnants of coal mining in the Crowsnest Pass of Southern Alberta. The following year he was invited to instruct drawing, design and painting at the Alberta College of Art. He taught at ACA from 1975 until 1978.
In the fall of 1978 David left teaching to devote his full energy to the creation of art, and so began a productive process that continues to this day. David More has since become known across Canada as a painter, illustrator/author, and muralist. His images of the Canadian landscape range from Vancouver Island, through Alberta to Nova Scotia and New Brunswick.