Why do I masturbate differently? (M19)

Im (M19) and I've seen guys usually masturbate by holding the length of their cock with their hand and moving their hand up and down. But I do it a bit differently. I do it by just holding the length of my cock with my hand and just inserting pressure to it between my fingers. And when I try to do it like how others do, I just feel nothing. Like, NOTHING AT ALL. I've been like this since ever. Is this a health problem? Or is it natural?