The worst cut I have gotten is smaller than I did routinly at my right nostril while trying to trim the top of my stash. Was using a twin blade disposable.

Paying attention to what you are doing, without distractions and you will have no trouble.

Also the more comfortable you are with handling sharp objects like knives gives you confidence.

I did not have any trouble with the handling of straights. I used knives all the time cooking meals.

The beginners guide starts you off shaving small areas to help build confidence.

In life you have to face your fears.

Hope this helps?

Silver2