Critique by others is always really a replacement for, and second best to, constructive self-critique.
While this drawing is already very good, what I find even
more praiseworthy here is:
QUOTE (NVA)
Yes, the errors come from the too long nose, this deforms the lower part of the profile, the teeth and chin are somewhat too prominent, the ear too big, it must be a bit more backward, and the form of the head is not correct. As I forced me not to use a ruler, well, I had to pay!
If you ignore the original, I feel the copy is quite agreeable. But, when we copy, we must be precise, mustn’t we ?
Which is a fair and accurate assessment of your own work. You should rightfully be proud of the work, for, as you correctly state "If you ignore the original, I feel the copy is quite agreeable." And you are correct, this is certainly so, the work would stand in its own right. However, the fact that you are also training your own eye, and can now see the various ways in which it is slightly "off", and can do so in a positive fashion which does not undermine your self-confidence in your own accomplishment, means that you are also ready, willing, and able to make further progress.
I congratulate you.
Dave