Mathieu Manset netted in the dying seconds of the game to rescue a point for the Sky Blues after they had fallen behind in stoppage time.
"When you are losing with two minutes to go it is quite a turnaround. Credit to the players, I was very proud of them," PA Sport quotes Pressley as saying.
"They believe in the way we are trying to play but we just need to tighten up on a couple of things and we are close to being a very good side.
"We are not being carved open but are losing goals because of minor details. At the other end we are such an exciting team."
Coventry have cut their points deficit to minus three following today's draw, having previously incurred a 10-point penalty as a result of their financial turmoil.