"There are still mistakes I can improve on but that will come from practising."
England's recent one-day performances have been as infuriatingly inconsistent as the mid-summer weather, and yesterday was not one of their better days.
The sun may have shone but England's prospects remain distinctly murky after their 10th successive oneday defeat while batting first.
Only a win with a bonus point against the West Indies at Lord's tomorrow will ensure they return to contest Saturday's final.
After picking only three front- line bowlers on Thursday, England changed tack yet again, giving Sajid Mahmood a debut in place of Anthony McGrath, but the side still looked out of shape.
A fourth-wicket partnership of 122 between Flintoff and Andrew Strauss enabled them to recover from 57 for three to post a respectable 237 for seven but they never looked like winning, with Stephen Fleming (99), Nathan Astle (53) and Hamish Marshall (55) guiding New Zealand to a comfortable six-wicket victory.
An opening partnership of 122 between Fleming and Astle drew the sting from England's attack, with Mahmood in particular given some harsh treatment.
The 22-year-old suffered a tortuous debut, with his seven overs costing 56 runs, but Flintoff believes his Lancashire team-mate will bounce back.
He said: "Sajid's a good bowler and will learn a lot from it. I remember my debut when I went for nine an over but it's a totally different game. It's a big step-up but one I'm sure he'll grasp."
Having bridged the gulf himself, Flintoff can show him the way..