portrait: artistic representation of one or more persons

military uniform: standardised dress worn by members of the armed forces and paramilitaries of various nations

man: male adult human

studio: working places set aside for artists to work, the term is generally applied to workspaces used by artists creating fine art, particularly art dating from the 16th century to the present

bust: sculpture of the upper part (head, neck, and a variable portion of chest and shoulders) of the human figure