The Sky Blues could claim to have been the league's entertainers after scoring 13 and conceding eight during a three-game spell in August.
But they needed to show different qualities at the Lamex Stadium to claim a first win in three games after Leon Clarke pounced on Robin Shroot's poor back pass to put the Sky Blues ahead on 33 minutes.
"The road back from losing ways to winning was never going to be an easy one and we've seen a number of performances recently that have been way below the right level," Westley said.
"There was much more I liked and some attacking intent as well. The error cost us and if you take that out of the equation it's a different result.
"We've looked way off the level against top-six sides this season but here we looked much closer to some top-quality opposition.
"We're taking strides and it's important when you're not getting results that you can see progress and you could see that. We will continue to do what we can to get a winning machine together.
"We're making marginal improvements and Rome wasn't built in a day. We're nipping losing habits in the bud and the desire of the players to change is evident to me now.
"There is definitely some momentum and I don't think we're far away from a good set of results. The desire and determination to change things is very much alive."