
Working Methods
Layers of an Oil Painting: From Support to Varnish
An oil painting can include a support, size, ground, preparatory drawing or paint, image-forming paint layers, and varnish.
A finished surface may preserve plans, changes, and repairs that ordinary light cannot separate. These guides define each layer carefully and avoid turning one technical image into a complete biography of the artist's hand.

An oil painting can include a support, size, ground, preparatory drawing or paint, image-forming paint layers, and varnish.

Underdrawing is the preliminary drawing of a composition on a prepared painting support.