Irfan, who was sidelined for 18 months after making his Pakistan debut in England in 2010 in a solitary one-day match, made a comeback on the tour to India in December.
"The Indian tour was a great learning curve for me. Bowling to quality batsmen and before full crowds. It helped me become a more confident person and bowler," Irfan told PTI after returning home from the West Indies.
The nearly 7 feet tall left-arm pacer said that he had not looked back since the Indian tour.
Irfan said he feels comfortable bowling to any batsmen.
"After the Indian and South African tours I think I also became a more lethal bowler because of the 10-days I spent in the Wasim Akram camp in Karachi. He taught me there how to bowl the inswing and once as a left arm pacer you learn to swing the ball both ways it is easier to pick up wickets.
"I have pace and bounce but with the ability to swing the ball both ways I am always sure I can get wickets with the new ball no matter who the batsman is," he said.