After letting all of the texture dry, the next day, I dumped the excess sand off of the board, fixed a few patches I may have missed, and spray painted all three boards black. I used five layers over the black. Although I used quarts of paint purchsed from my DIY store, they matched the following GW colors (these are now long gone, but a web search will match them to the new colors - I added the new names below): Scorched Brown, Dark Flesh, Bestial Brown, Bubonic Brown, and Bleached Bone. The first was brushed on liberally and as each color was used, painting gave way more and more to dry brushing. I allowed each color to dry completely between coats so this took me a couple more days, but the results were worth it!
Scorched Brown (Rhinox Hide)
Dark Flesh (Doombull Brown)
Bestial Brown (Mournfang Brown)
Bubonic Brown (Zamesi Desert) Note - the pic below has always seemed overly yellow to me... the actually color was a bit more subtle.
Bleached Bone (Ushabti Bone)
I wanted a little additional texture to break things up (and to cover a few areas where brush strokes were too obvious) so I added some small patches of dull green static grass. This time I used white glue and spread it small random patches, again working only on one small section at a time. When this was dry, I used a hand-vac (as always be VERY carefully when employing any vacuum around the house least your significant other get any ideas) to pick up the excess grass, I lightly dry-brushed it with yellow ochre and I was finished!
My last step is to spray a light coat of matt varnish to add further protection to the boards so they will hold up to game play.
Hope this helps! Terrain building is really much easier than painting wee little soldiers and you should not feel intimidated if you are thinking of starting a project like this. If anything is unclear or you have any questions, please feel free to ask! Next week I will start on another series of terrain boards from the old site...