Awesome! Maybe not the sand idea, might get a little messy, but I like the concept of it!
Chiliean Metallic Plaster Wall Finish, The bronze colour of this wall seams to work better because of the cracks and texture.
Use joint compound for a diy stucco finish
Drywall 101: Using Joint Compound for a Stucco Wall Finish. Tips & Tricks by DIY Diva at Black Feather Farm.
Wall - looks like a combination of pos. & neg. modellos with plasters or aquastones
Silver leaf raised Royal Design Studio stencils with multiple plasters and glaze. Work by Tiffany Alexander of Blank Canvas Design Studio.
Reading. Listening. Watching.
Mixing and Layering Stencil Patterns with Celeste Korthase - Wall Mural Stencils by Royal Design Studio
Fabric Texture Wall Finish for Painting Walls - Royal Design Studio wall stencils