Particle Simulations Shape Crumbling Busts of Legendary Monarchs

2x2 grid, do this for 4 famous emperors, 16:9 16:9 Render_Particle_Dune ($ GranularSubject) Anchor:[Accumulated $ GranularSubject] :: [Sand Simulation]::5 Morphology:$GranularSubject formed by the accumulation of millions of distinct particles, gravity-driven shape, crumbling edges, forming a bust from dust::4   Material Physics:  Black iron filings, white marble dust, or colored sand, granular texture, falling grains::3   Illumination:  Side-lighting to catch every grain texture, sharp focus, textural contrast::2   Render Stack:  Particle simulation, granular physics, sculpture::1 Negative:[Solid smooth surfaces, liquid, air, blur]::-1