Very nice. I achieve similar effects using a product called Folkart Texture paint. it comes in 10 colors including dark brown and grey which would be good for the snow effect mentioned earlier and I'm sure a can of red would make excellent gore effects followed with a red and black wash.It comes in a 4 oz can. Its very thick so applying it with a brush is simple but you can also use a Popsicle stick to apply it like a paste. It dries fast and hard. After its dry I apply a drybrush or a khaki color and a wash of devlan mud. It is sold at most Arts and Crafts stores that carry Folkart paints. I also use for fast and easy movement trays and for rapid basing ( before the mini is glued to the base is best).
Here's what it looks like on my vehicles: