Experimenting with colours and washes to create the look of limestone and fieldstone walls. Read the techniques I used to get this finish.  

 This automotive garage has a decorative stone wall on one side, the other walls appear to be concrete. I wanted the appearance of fieldstone and my first attempt was using Woodland Scenics Yellow Ochre, Burnt Umber, Raw Umber and Black colours in a 16:1 wash over a base coat of Granite Grey. The result was too washed out, with very little colour. My second attempt was using the three main colours at full strength, dabbed with a small brush, followed by the black wash. I am pleased with this result  

 This building has solid stone walls that I wanted to look like limestone. I started with a base coat of Granite Grey, followed with Woodland Scenics Stone Grey and Black diluted to 16:1. I repeated this three times to get the wall to look they way I wanted.  
 

I am very pleased with the results. When finished, these two buildings will complement my layout, The Trenton Subdivision in N Scale. Next is painting the remaining details/features of the buildings. As always, comments and suggestions are welcome.