Clarke made an impressive knock of 105 on Sunday as the visitors earned a 88-run win to go 1-0 up in the series after the first match was rained off.
"It's nice to get a win and it's a good start to this series for us," he told Sky Sports News.
"England bowled pretty well up front on a good batting wicket, but all our boys did a fantastic job. To make over 300 was a really good score and all our bowlers executed."
The series continues on Wednesday when the teams meet in Birmingham.