Harry Brook believes he has improved in “every area” since he burst onto the scene with a maiden career century in Yorkshire’s memorable win at Essex in 2018.Brook, 23-years-old, has been one of county cricket’s standout batters so far in 2022.His 512 runs from three LV= Insurance County Championship matches, including two hundreds and three fifties, puts him in the top five leading scorers across both divisions.It is form which has also put him in serious contention for an England Test call this summer.Brook’s next outing comes against Essex at Chelmsford, a game starting tomorrow at the venue where he posted his first of six Championship hundreds to date in 2018.On May 5, 2018, Brook posted a sensational second-innings 124 after Yorkshire had been bowled out for 50 on the opening day of…