To create this, apply a foundational oval shape of spackle to the canvas using a wide palette knife. While the compound is still wet, take your notch trowel and drag it with steady, consistent pressure upward from the bottom center of the oval, following the curve to define the ribbed arch. Let it cure completely, then apply a final coat of matte white paint to unify the sheen.
2. Earthy Terracotta Ombré Double Arches
How to Create
Double arches nested together add architectural depth, while the ombré blend of earthy terracotta introduces soft, sunset warmth. This design uses two contrasting colors of spackle: a deep, textured terracotta rust and a lighter, smoother sandy peach. The colors are blended seamlessly where they meet on the canvas, creating a soothing color gradient within the distinct arch shapes.
