The goalkeeper made several superb saves in the draw at Stevenage and was widely praised for his display.
Earlier this season high-profile mistakes, most notably against Newport and Port Vale, have resulted in goals against the Saddlers and the academy product knows he must continue to improve to keep his place in the team.
Roberts said: “I can be open and honest and say there’s goals that have gone in this year that I’m not happy about. I’ve let the team down.
“I have to go to Maik (Taylor) and be honest and open and do the analysis of the games.
“Then I need to step forward and come out of my comfort zone. We have all the backing as individuals and as a squad from the staff.
“They want us to be free and go out and enjoy playing football.
“I can’t dwell on mistakes, I have to look at what I can do better. I look at every single goal that goes in and think ‘what can I do better’.
“As an individual you have to be able to adapt, with new shapes and formations, we have to adapt.
“I have to keep working hard to get that consistency. I can’t get carried away now, that’s only one performance. We have a game on Wednesday and I have to keep improving. I have to show that consistency or I’ll be on the bench.”
On Roberts’ performance against Stevenage, Dutton added: “This was the first time we’ve seen the Liam Roberts that we all know and love.
“Previous performances have been OK, some bad ones, but that was the Liam Roberts we all know and love.
“He sets such high standards and it’s difficult to live up to them at times. He was phenomenal and I hope he kicks on from there.”
Meanwhile, the Saddlers have decided not to appeal Liam Kinsella’s red card at the weekend, meaning the midfielder will now miss the next three games.