Lay the pond's liner over the pond, making sure that you have enough liner. The liner should drape over the pond and you should have enough fabric to lay over the sides of the pond.
Cut or break stones to fit using a wet saw or by slowly chipping small pieces off of the edge of the stone using a hammer.
Lay the stone pieces flat onto the inner lining of the pond. Fit each stone together like a puzzle. Continue to do this until the base and walls are stacked with stones.
Pick up each stone one at a time and apply silicone caulk on the underside. Push the caulked stone back onto the liner where you just removed it. Continue with each stone.
Squirt caulk in between each stone and push small gravel pieces into the caulk until the cracks fill up. The gravel stones will help mask the cracks and protect the liner from tears.