Lively and exciting, the technique can appear "ostensibly slapdash" – people often think that Hals 'threw' his works 'in one toss' ("aus einem Guss") onto the canvas. This impression is not correct. True, the odd work was largely put down without underdrawings or underpainting ('alla prima'), but most of the works were created in successive layers, as was customary at that time. Sometimes a drawing was made with chalk or paint on top of a grey or pink undercoat, and was then more or less filled in, in stages. It does seem that Hals usually applied his underpainting very loosely: he was a virtuoso from the beginning. This applies, of course, particularly to his genre works and his somewhat later, mature works. Hals displayed tremendous daring, great courage and virtuosity, and had a great capacity to pull back his hands from the canvas, or panel, at the moment of the most telling statement. He didn't 'paint them to death', as many of his contemporaries did, in their great accuracy and diligence whether requested by their clients or not.