Pulp Figures Mud Men

Here's a small squad of muscular dudes in fearsome masks. Pretty happy with skin tones and texture, their clothing (what there is of it), and the masks. Less happy with the sandy bases. Using glue, even though I'm trying to apply it as thinly as possible, tends to discolour the sand and create clumps. Later experiments show that adding a small amount of sand to wet paint creates better results.