As a child, Dematera (b.1981) drew rustic provincial life sceneries with his brother. Working for Roland Ventura as a studio assistant for three years taught Dematera how to use graphite and the right combination of pencils. Thereafter, he became an apprentice to the brother Ronald Ventura for ten years where he learned to use acrylic and oil media allowing him to hone his own style of hyperrealistic painting.