RaboDirect PRO12 rugby now returns on Friday night when Blues head to Belfast to face Ulster Rugby.
And Copeland, who was named man-of-the-match after an all-action European display, is determined Blues will now build on that result and continue to his the high standards.
"The result was massive for our self-belief. We need that belief in ourselves and in everyone around you," he said.
"Every single player left everything on the pitch against Toulon. That is what we need to do every week. You can't have off days; there are no off days at this level. From now on that is critical.
"We want to take all the positive energy, hunger and attitude into every game we play. Why should we fear anybody after this? That's the attitude we have to have to compete with and beat the best.
"Ulster is a tough and big game, but we need a result to climb up the ladder. We have had a few results in the RaboDirect PRO12 that we let go, we weren't right and that is unacceptable.
"It's happened and we have to move on and learn. Every game now is critical now."
Reflecting on the win over Toulon, Copeland admitted the magnitude of the result took time to sink in on the final whistle.
"I came into the changing room and said: 'Did we win or not?' Days like that are why you play the game. It's what you live for. I just loved every single second of it," he revealed.
"After we scored the late try my thoughts were: 'Please let time go faster' for the next few minutes. It was just elation after Gareth Davies' try.
"We wanted it so bad and the fans were just incredible. Without a doubt it was the best moment of my rugby career. Man-of-the-match in a Heineken Cup game against the champions, it doesn't get any better than that, does it?
"The fans were brilliant and their passion fuelled us. We wanted that game so bad and we did everything we had to."