McClean made his Premier League debut last weekend.
He said: "It's only one game and I can take nothing for granted.
"I am just going to continue to work hard and try to improve, and if the manager calls upon me, then I am ready and I want to repay his faith in me.
"I came over and my only aspirations were to try to get into the team.
"I knew that wasn't going to happen straight away and that I had to work hard at it and hopefully impress the manager, which I seem to have done, and now I want to repay the faith he has shown in me.
"It's nice to get the debut out of the way, and the next thing now is to get a start and make myself a regular in the team, which is the aim."