The 23-year-old has scored just one goal for the Gunners following his £16m from Manchester United on deadline day, but the Spaniard feels that he will start to fire when the team adjust to his style of play.
Cazorla told The People: "He is a very different player to the ones we have had before at Arsenal. He is a clinical finisher, quick and always looking for space. Olivier Giroud is a different kind of striker.
"He is good at heading and is strong, but Welbeck, perhaps, is providing something new to the team. We will make the most of having him as it is a big advantage to this side."
Arsenal face Galatasaray in their second Champions League group match on Wednesday.