Troostwijk, Wouter Johannes van – Zelfportret, 1809 Rijksmuseum: part 4

The picture has something of this: people, furniture, portrait, man, wear, seat, two, lid, room, sit, indoors, music, outerwear, facial expression, veil, outfit.
Perhaps it’s a painting of a man sitting in front of a easel with a paintbrush in his hand and an easel.