Goals from Charlie Webster, Harvey Vale and Jude Soonsup-Bell did the damage to seal a come-from-behind win, with the young Blues moving ahead in the early Group H standings following a 2-2 draw in the other game between Zenit and Juventus.
"For most of the boys it was their debut so it was good for them to get that experience," Myers told the club's website.
"Maybe there were some nerves at the start but we grew into it and a win is always important in the first game of any competition. There were some good bits and some indifferent bits but it's a young group and I think we're going to improve as we go on.
"It was also good being able to get three subs on later in the game who haven't played before either, like Leo Castledine and Billy Gee with an opportunity because Bashir Humphreys had to come off injured. It's nice for them to get a taste of it and now hopefully the next game should be a little easier.
"It's nice to get goals from the players you want your goals from. We did say to Jude that, for all his good play in the first half, at times he wasn't in those areas to score so we asked him to get into the six-yard box a bit more.
"He did that for the first goal, had a shot saved before Charlie finished it off, and then got his reward by getting in there for his goal as well. That's where I want my centre-forward trying to get goals and that's what happened."
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