Fitzpatrick made an untidy start to his round, but quickly put things right and was rewarded with a back nine of five-under par 32.
He was three over after four holes, an opening which led to him deciding not to reach for his driver, but to rely on his three wood.
“It wasn’t the best start, I was hitting my driver everywhere,” he said.
His new approach was immediately successful and, helped by a hot putter, he did not drop another shot.
“I holed two from 38ft and a lot from inside 12ft, it was a confidence booster,” he said.
Fitzpatrick, 16, is playing in the Carris for the first time, having taken fifth place in last week’s English Under-16 boys’ championship for the McGregor Trophy. He equalled the course record at Wallasey in his final round, shooting six-under 66.
International Bradley Moore shot a three-under-par 69 to take the first round lead at Little Aston.