I'm nervous about cuts. I don't think I've ever drawn blood with a more modern razor, so what is the main foul up that causes nicks and cuts?
I would say too much pressure and also lapses in concentration.
+1
Go slow, and easy. BTW even a little weeper or nicks really don't hurt and are usually self healing.
I would have to say it is most likely the result of moving the razor in a direction not intended for cutting hair, that's not a smart aleck answer, bear with me.
The blade is meant to cut the hair as it moves across the face, with the widest part of the blade moving in a straight line.
If the razor is moved in a direction parallel to the cutting edge, and it doesn't take much, there is a cut.
Likewise, twisting the razor as you go to position it for a pass while it's still in contact can do the same.
Getting the blade angle really off can cause bleeding, but not due to a nick or cut, but due to a "weeper" that is a badly irritated hair follicle that starts to weep blood.
Finally, there is just the old running over a road bump kind of cut, where you have a raised bit, and take too long a stroke or forget about it, etc.
If the prep and lather are good, and you have the razor at the proper angle, and you take the razor off the face before repositioning, and you don't use pressure, cuts and nicks should be few and far between.
Hope that helps.
+ ∞ (infinity symbol)lapses in concentration