McDermott replaced Neil Warnock as manager last Friday and steered his new club to a second Championship win in the space of four days after Rudy Austin supplied the only goal at Elland Road.
Leeds climbed to within six points of the play-offs, seven above the bottom three, and McDermott is demanding more of the same from his revitalised side.
"We controlled possession really. We needed to get a goal in the first half, but we didn't," said McDermott.
"We had a few opportunities and once we got the goal - the goal I thought was excellent, a really good bit of skill by Dioufy and that was a really good finish.
"I've come here to enjoy myself, the staff want to enjoy themselves and I want the players and the fans to enjoy themselves, that's what life's about.
"I think there's something tangible left this season. Every game there's something tangible.
"When you're stood on that line and it's 1-0, it's definitely tangible in my heart, so every game there's something to play for because you're playing for your supporters.
"You want to finish the season strongly. You want to do as well as you possibly can.
"I'm just a bit upset there's only three games left, it's a shame there's not six."