art of drawing and painting; painting technique
Refers to the methods, techniques, or art of drawing and painting, often in a traditional or formal context.
He is learning the techniques of Japanese painting.
This picture is drawn with a unique painting technique.
perspective (artistic technique)
descriptive geometry
Compound of 画 (drawing, picture) and 法 (method, law). The exact historical derivation is uncertain, but the combination naturally yields 'method of drawing/painting'.