The French striker, who cost a club-record £8m from Marseille, scored a debut goal for the R's on Saturday as they drew 1-1 at West Ham United.
"It was brilliant to see him take that chance," Hill told reporters. "If we can keep the ball and create a few more chances for him he will go on and be a great signing for us.
"Hopefully he can kick start our campaign."
Despite Saturday's draw, QPR remain five points from safety at the bottom of the Premier League table.