looks god to me,i would put it on a stick
and poke something with it
as far as that narrow entry notching goes(i am no expert as i have to do it succesfully myself)
but once you start the notch,i find for me atleast
if you work from below the stone,with the tool tip pointing up into the notch,then pop the flake
the tool doesnt contact the side as easily(unless i twist it or my shakey hands interfer) and i dont blow off the shoulders as easy