"We made a few mistakes in defence that we could have avoided," admitted Bonnaire, who has managed something not even the likes of Wesley Fofana or Sitiveni Sivivatu have achieved in collecting three back-to-back Heineken man of the match awards against the Scarlets, Exeter Chiefs and Leinster.
"We will have to be better and try to not be behind by one point two minutes from the end of the game. On that exact point we still lacked a bit of experience and we must be more constant during 80 minutes.
"And I don't see us as being big favourites for this game - Munster also have a pretty good side - and in these kind of knock-out games it's always 50/50.
"We will probably have more fans in the stadium but their fans travel a lot and we fully expect a huge battle with massive desire. I think we have the team to reach the final and since the start of the season we have been able to make beautiful performances and prove it."
It will be Clermont's 15th tournament clash with an Irish team - eight against Leinster, two against Ulster Rugby and four previous contests against Munster - and Bonnaire is wary of their never-say-die attitude.
"We often play Irish teams so we can better study their strategies," he said. "All Irish teams play the same kind of game and they're always hard to beat because of their high level of determination.
"We will have to be patient to build a victory and be strong on the basics. We know they are very strong in the front lines and if we cannot match them in this area it will be tough.
"There is a very healthy concurrence between all the players. We all get along very well and you can see that out on the pitch. And, unlike previous years, we do not have injuries to key players and that has helped us to be mentally and physically fresh."