Create depth and narrative by simulating an arched “niche” or alcove within a moody, dark background. A smooth, matte navy blue canvas frames a single, smooth recessed arch of a contrasting lighter color (like soft gray or creamy white). The base of this niche is accented with actual small, handmade clay beads or small pebbles embedded into a thick foundation of spackle.

Paint the perimeter of the canvas deep matte navy blue. Center your arch stencil and apply smooth, light gray tinted spackle inside the lines, keeping the surface completely flat and recessed relative to the dark background. At the base of this “niche,” apply a thick horizontal layer of raw white spackle. Before it dries, press several handmade terracotta clay beads and small smooth pebbles firmly into the compound, creating a “collection” resting in the textured alcove.