The Villans suffered their sixth defeat of the campaign last Saturday as they gave away a two-goal lead before being beaten 3-2 by Manchester United.
"I thought the performance against Manchester United was a good indicator of where we're heading," Guzan told reporters.
"I think it's a sign of good things to come. It will take time but we're on the right road definitely.
"Everyone watching could see what we're all about – desire, determination and a real attacking philosophy."
Villa take on Premier League champions Manchester City at the Etihad Stadium this weekend.