The reliable boot of Greig Laidlaw gave Scotland an early lead in blustery conditions, although the advantage was not to last long.
"We'd ideally like to play better and with more fluidity, and probably get on the front foot more", said Best.
"So I'm not sure how they summarise Plan A, because I think we have a very varied game".
"Just that final piece, the execution off set-piece, which has been really good - that fell off the jigsaw today and that's my fault". I think we just muscled our way through it to be honest.
Scotland narrowed the gap thanks to a Laidlaw penalty. "We've got to dust ourselves off and get back to the things we do well", he added.
"We were really confident at half-time".
Things will be very different in Yokohama in September when these sides kick off their World Cup campaign against each other, but Ireland will be delighted to have kept the Scots at arm's length.
Carbery atoned for his first half error with a stunning break and pass to release Keith Earls for the defining score of the game.
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Scotland then suffered an injury setback of its own when influential full back Stuart Hogg was forced off the field with what appeared to be a shoulder injury after 16 minutes.
"Finn is playing very well", said Scotland coach Gregor Townsend.
But just when it seemed as if Scotland would not be breached, Carbery busted through two Scotland forwards to take play deep into opposition territory.
He said after the game: "It happens to him because he is who he is, that's going to happen. If we want to win tomorrow we'll need one of our best games".
The biggest challenge when facing the French these days tends to be dealing with the size of their pack, who will steamroller over you unless you get your defence spot on.
The All Blacks went on to win the game 29-15 - a result which led to heavy criticism against the Frenchman, so much so that the International Rugby Board (IRB) as they were known at the time issued a statement admitting Poite had erred.
"There's no better challenge than going to Murrayfield and having to put in a performance".
Take two, this time a 5m scrum for the home side but Ireland withstood everything they threw at them through 25 phases with Stockdale denying Tommy Seymour out wide and Cian Healy strong a number of times before Simon Berghan spilled it and O'Brien pounced. That gives me confidence.