I have been pinning constantly for almost a year now and I still get slightly nervous. It’s nothing like when I first started, but I still get sweaty and need to control my breath before/during pinning. I mean… you’re poking a piece of sharp metal into your body, what do you expect? Your body is gonna react whether you like it or not. Mentally, I don’t give a crap, I almost look forward to pinning, but my body still gives me a bit of a reaction almost every time. For you, it might be shaky hands. For me, it’s sweating and breathing heavy.