Hello everyone. I entered the world of cardistry recently and I love it. Every time I learn a new flourish and having a "eureka moment" to know how to flourish that move is extremely satisfying for me. I learnt the scissor cut from Andrei Jikh's Genesis volume 1. I love this move and kept practicing only this move for a an hour stright. I can make a good looking scissor cutwithout droping cards or making an untidy looking deck after the move now. But after a while I noticed my index finger's between first and second joint, between index and middle finger side (where it used to hold the card and as pivor point for 2 packet to complete scissor cut) got 2 very small blister. Obviously I can't practicing this move for now and let it rest for a day or two. I would like to know, if I used too much force to hold the 2 packet or am I just having a delicated finger skin (I'm a programmer btw) due to being new to cardistry.