The master portraitist’s process is spelled out, Cardiff celebrates the great Gwen, Lynda Benglis eyes up Giacometti and Scottish art schools wind back the clock – all in your weekly dispatch

Lucian Freud: Drawing Into Painting

Dig deep into the vision of this great artist with an exhibition that follows his portrait process from paper to canvas.

National Portrait Gallery, London, from 12 February to 4 May

Gwen John: Strange Beauties