Our Pebble Sheen is being applied tomorrow and we decided to add the abalone shells. I was told they can apply it mixed in with the Sheen through the gun or they can "broadcast" (apply by hand) it on top. If it's mixed in, some of it wont be seen as it will get buried. If it's broadcasted (hand applied), it will lay on top more and be more visible. If it is applied this way, they said the walls would not be done. The only way to get coverage on walls is to go the mixed in route. If you have Abalone shells, how did they apply yours? Pics would be very much appreciated.