Sure, this is the recipe I used for these bases (all the paints are from Citadel):
- A coat of "Astrogranite" texture paint.
- A wash of "Drakenhoff Nightshade".
- The I glued the little "rocks" which are actually cork bits called Battlefield Rocks by The Army Painter (https://www.amazon.es/Army-Painter-Battlefields-Rocks-150ml/dp/B004V2IYTM).
- I painted the rocks black with "Black Templar" Contrast paint.
- Then I did a Dry Brush all over the terrain and the rocks with "Dawnstone".
I hope it helps!