Van Wolfswinkel earned his second senior Dutch cap against Indonesia in June, and is confident he can make a quick transition from the Portuguese league to the hustle-and-bustle of the English top flight.
"I want to show from day one what I can do and I hope for a great season," he said.
"At the beginning, it will be new for the defenders who play against me, that will change after a while - but if they know how I play or if they don't know how I play, it will always be up to me to do well for the team.
"I know my qualities fit in the English league."
But he is determined not to set any targets for a first season at Carrow Road.
"I just want to be important for the team as well as score goals," he said, "but I know I am ready. I will score goals everywhere I play.
"Last year I scored 15 times for Sporting, and also goals in the Europa League, while the year before I was up around 25 for the season. I was also getting a good share of opening goals and the crucial goals in games and they are important if you want to win matches.
"I was the main striker and I had to accept that responsibility. The manager has said I am a team player also, so it will not only be down to me.
"I will do my best, but I am a team player."