The Red Roses’ 42-21 victory against France ensured Mitchell lifted his first trophy with a side who have gone from strength to strength under the Kiwi.
England got out of the blocks quickly in Bordeaux through Maud Muir and Alex Matthews but were made to work for their win in front of a record French crowd at Stade Chaban-Delmas.
The second half remained scoreless until Marine Ménager broke the deadlock but it was all too late as Mitchell revelled in a physical meeting with Les Bleues.
“Getting to this point, we always knew it was going to be an arm wrestle,” he said. “We have been looking forward to that for some time.”
“I think you are faced with pressure every day when you are in sport.
“I really embrace it, I look forward to walking towards it. That’s just my way, and that’s the girls’ way as well.
"To be given the opportunity to coach the Red Roses, it was a pretty easy decision.
"They have a winning mentality and they want to get better.”
Mitchell’s Red Roses entered the tie with mounting expectations but dealt with all the pressure with aplomb in front of a fervent record French crowd.
England’s last four winning margins were all by more than 36 points up until their Grand Slam decider but they were limited in Round 5 by moments of French brilliance in attack.
However, before Saturday Le Crunch had been no more than a 12-point game in each of their last three meetings, in Bordeaux the margin stood at 21.
Seasoned success magnet Mitchell warned that there is more to come as captain Marlie Packer lifted the trophy among flares and pyrotechnics, a scene the Red Roses have become accustomed to.
“I think we’ve set a pretty good benchmark in this competition in terms of sending a message to everyone else in terms of how we want to play the game," he said.
“We've got just as much energy today as France playing in front of full capacity and the girls deserve this kind of environment. They’ve earned it. They are big game players.
"You never underestimate this tournament, it's a great tournament. It's our bread and butter, it's where we get our respect at home.
"We wanted to stay the best 45 days ago, we have been able to achieve that.
"We were after a different mentality in a different approach in the way that we played and I think we can take a lot of credit for that."
