https://sandartrenu.com/
Sand portrait art is often created on beaches, riverbanks, or specially prepared sand platforms. Artists first select fine, slightly moist sand because it holds shape better than dry sand. The process usually begins with sketching the basic outline of the face directly onto the sand surface. Using fingers, small sticks, brushes, and carving tools, the artist gradually builds up or carves out details such as the eyes, nose, lips, and hair. Shadows and depth are achieved by adjusting the thickness and angle of the sand layers. Even slight changes in pressure can dramatically alter the expression of the portrait.