I just finished analyzing my hammering in my human face video and realized something about my self, all the techniques i've acquired from the other smiths i've had the honor of working with come into play.....I use two hammers, 2 1/2 # rounding, 1 1/2# straight peen, throughout the video my hand placement varies, end of handle, middle of handle, 2" from the head, full wrap grip,
and thumb on top grip..... go figure. My point is this, after more than a few years at the craft your brain will store things that come out when you need them in your zen moments, you know, when you're in the "zone". Once you are less tense with the hammer in your hand, your grip will loosen, hold it often, flip it around, get used to it. try to tap something quickly, you can't do it if you death grip it, also loosen your wrist, otherwise you're just pounding. just my way...it works for me