Becker hand-paints watercolor paper in layers — sometimes gilded — then guillotines it into roughly two-centimeter tesserae and stands each one on its edge in wet adhesive, tens of thousands of pieces per work, over up to four months. Because each fragment casts its own tiny shadow, the mosaic’s color and shimmer shift as you move past it, so the image never looks quite the same from two angles. No sketches: it’s built freehand, tile by tile.