Javi Gracia was delighted with his team's performance in their win against Coventry City in the Carabao Cup.
Watford managed a convincing 3-0 win in the second round clash against the lower division side.
And their boss believes it will give them confidence going into a key Premier League game against Newcastle at the weekend.
He said to reporters: "It was a good performance, not only a performance, we got a good result as well.
"It's good for the confidence of the team and for all our players and it's important to get a clean sheet.
We have to be ready for the next game on Saturday, it's an important game and we have to prepare as better as possible.
"It's something we need in this moment - to improve our defence. Today we did it well, but we need to keep doing in the same way in the next games if we want to improve our results.
"We need to get more clean sheets and can't concede so many goals. We've conceded seven goals in three games, it's something we need to improve to be more compact, more solid and in the same way improve our attack and prepare to take the chances we have."
