Despite all of their hard work, Norwich ended the 38-game campaign with a goal difference of minus 14.
"You know you are always going to be busy in a league like this, but last season, we only managed something like three clean sheets and we want to build on that," said Ruddy, who is now away with the rest of the Norwich squad on a pre-season training camp in Austria.
"We score as a team and defend as a team, so we know that is not enough.
"We need to tighten things up because last season you felt we always had to score two goals to give ourselves a chance of winning, whereas this season we would like to say 'right, we will score one and still win'.
"That is the aim, and if we can score more goals than last season and let in less, then that is a good recipe."