It is something I am careful of, for sure. I just always angle the pin away from her whenever possible and always keep my finger or hand in between her and the tip. I have stabbed myself a couple times

I should have practiced my pinning more when she was tiny and feeble. I am not quick enough with it now and she is too strong and crazy lol.
The last time I pinned something on her, she was REALLY wild and I came really close to stabbing her when she flailed and made a sudden grab towards her general diaper area, I had to get a very serious tone with her!! I have not tried it since then. She is a huge PITA on the changing pad these days and I am only doing aplix one-step things like AIOs or Flips, or pull-on fitteds.