⚠️ Usually it's the rule that after the guest asks for 拝見, the 蓋置 moves; but this is the exception! Here you move the 蓋置 (place it with L behind the 建水), then close the 水指, then get asked for 拝見.
Host partakes: (The following is true for all cases when the host partakes, not just 流点.)
📦 If it happens during 茶箱, then the 古帛紗 will be the wrong way. So grasp it overhand (like 茶杓 for 拝見) before putting it next to yourself so it's facing the right way).
➡️ Normally, it is clear that now the tea making is finished, but in 流点, it may continue back and forth.