Giroud was on the scoresheet at West Ham United on the weekend.
"It is important to score. It is always important for the confidence of an attacker. Robin van Persie is gone, much is expected of me. I am sure of my qualities.
"This was a problem of success, you have the impression that the goals are smaller. I've always scored goals so I am not worried. Arsene Wenger talks to me from time to time. I really think I made a good choice," he said.