Douglas John’s work is shaped by his experience of space, form, and light in Mumbai. He studied at Sir J.J. School of Art, Mumbai, completed his art education in 1990, and later joined the same institute as a teacher. He focused on British-era buildings, light, and structure, often from his studio in Thane. His attention to detail developed during his student years, working with watercolours and oils. He was also influenced by the works of Thomas Moran, whose paintings he saw at an exhibition at NCPA, Mumbai, in 1987.