hand painted (dusted?) sand overlays mask and normals included. usual skin stuff like, be careful with your skin textures and make backups, requires an image editor (or penumbra would work i think)
might want to tweak it in photoshop by masking stuff away as needed. if you need the sand to shine you can add a clipping mask to it for spraying shiny bits in. there's a big seam problem at the waist from the sharp resolution change but it should be good enough for some screenshots or if you don't zoom in on the problems.