Despite Scotland opening the competition with defeat to England at Twickenham, Scott Johnson's side have beaten Italy and Ireland to spark talk of a first championship title since 1999.
Their credentials will be severely tested this weekend when defending champions Wales arrive at Murrayfield looking to keep alive their hopes of retaining their crown.
And with Maitland expecting Wales to go out all guns blazing, the 24-year-old Kiwi-born winger insists Scotland can leave nothing to chance.
"It will definitely be a step up again," he said.
"They have a class backline. They will have watched the tape of Ireland breaking through us a couple of times, so I think they will definitely come into this game with an attacking mindset.
"Wales will be tough opposition, but we are starting to understand each other. It's all about building trust.
"We're now in with a chance of winning the championship and the self-belief amongst the team is growing.
"There isn't any secret formula to winning: it's all about preparing well and doing the small things correctly.
"The guys are happy with the fresh ideas that Scott Johnson and Dean Ryan have brought. It's all about the basics."