Using the spatula or tool, spread the adhesive on the wall uniformly as shown in the picture. Use a separator of 1.5cm wide to separate between the rows.
Wet the rough surface of the stone pieces with water to avoid the absorption of water of the mortar, apply glue on the back hand side of bricks also.
Apply the stone by pressing hard to ensure a very good adherence of the mortar in the back surface of the stone.
Fill the joint lines with desired color in joint mortar using a grout bag. Shape the joint grout based on your desired effect. Clean out the excess mortar before it dries completely. Apply water repellent on clean surface that has fully dried joint mortars using soft and clean brush.