/ic/ - Artwork/Critique

tried drawing my glasses, first time I try something purely from life. is it just me or it is basically impossible to not alter one's point of view while drawing? I snapped the photo after being finished drawing but couldn't reproduce the exact pose.
I focused a great deal on negative spaces for this one, and tried not to hang on to measuring too much this time like I did before ( eg >>1768627 ) because I get tired very quickly by measuring every single thing, and the result comes out botched nonetheless because one can slip. also I'm not really sure overthinking measurements is a good thing compared to eyeballing shapes, or if while I don't have enough experience it'd be better if I aim for maximum precision the whole time.

anyway, overall, how bad/well did I do? should I keep going this route or should I fix something in my approach before it is too late?