Maloney hit the winner against Manchester United last week.
"We worked really hard with him physically to reach the level we needed, then he had to find a partnership and position with our players. 'That takes time.
"With a club fighting for the title in Scotland you get a lot of possession and the main concentration is what to do with it. It is straightforward.
"In the Premier League physically, you need to find the right level, then you have to work out what you are doing off the ball and how you are going to defend. It is not easy."