Valerie Brennan interviews painter Louisa Waber about her work and studio practice.

Waber remarks: "Whether the painting is finished or not is sometimes unclear – other times it shouts 'done.' Frequently I go back into a painting after a pause of weeks or months, often seeing possibilities I hadn't before. I can't repeat a painting. How it came to be is mysterious. I don't usually remember or know how I did a painting. I do know that every stroke or mark can exist only in the moment it was done. Five minutes later it would be a different mark or stroke and a different painting."