02:30 What on Earth? You don't put a joint on the rise of a tile. The top piece should be 50mm longer at least so it goes into the next tiles dip. At 03:20 you can see the upstand is crying out for water ingress. The water will fall left going under the joint. Take it a bit further and the water will run to the right and away. Even if you seal the joint it's still a weak spot.
02:30 What on Earth? You don't put a joint on the rise of a tile. The top piece should be 50mm longer at least so it goes into the next tiles dip. At 03:20 you can see the upstand is crying out for water ingress. The water will fall left going under the joint. Take it a bit further and the water will run to the right and away. Even if you seal the joint it's still a weak spot.