Looking good!
Another trick you can use for another quality boost if you can afford it is to create an AO like darken outline along the intersection. If you get a nice wide distance gradient along the inside edge and then modulate that using either the height or AO texture of your bricks and then tweak the resulting strength just right, it can add some very realistic effects. Without it the stucco can appear to float in places but that is probably nit picking.