Canaries boss Philippe Clement believes Norwich's uplift since he took charge is being hamstrung by a need to tighten up at the back.
Norwich, who have kept just one clean sheet all season, led twice at Watford only to fall to a 3-2 defeat which leaves them still in deep trouble second from bottom of the Championship.
"We had more chances than Watford so then it's really disappointing that you go home without points," said the Belgian.
"But also with the goals against. Some individual players need to do better in those situations. We gave at least two goals away too easily where we can defend much better.