Blackett returned to the side in midweek against Burnley.
"I have got to say I was really pleased with Tyler," Clark told the Birmingham Mail. "Both in defence and attack he did lots of good things in the game.
"He's quite unique in that he's 6ft 2/3in and quick and strong, being as a full-back.
"His debut was probably not what he would have wanted at the time.
"He gave the penalty away early in the game.
"But he is a tremendous boy.
"He is brilliant on the training pitch, he is always asking myself and the coaches to stay behind and do some individual work on his defending and different type of stuff.
"You want lads like him to succeed because you know they are working really hard at their game to try and get better."