The Reds youngster hammered a spectacular 30-yarder past Mark Cousins but spurned another chance as the Essex side hit back through Clinton Morrison.
"I should have scored another," Cofie told the Sheffield Star. "It was a bad miss but stuff like that happens. The more I play, the better I should get. I like to watch clips of people like Danny Wellbeck, Didier Drogba and Wayne Rooney on YouTube. I watch how they finish and how they get in the box. That's how I try and get in the mood."