I've drawn regularly since childhood but I've only been doing it seriously and systematically for the past ~3 years or so. I got into figure drawing during grad school (I'm a chemist by day). Lately I am trying to get better at anatomy and expressions.
If I left a critique for you it was probably very nit-picky and specific, because that is just how I think (and the sort of criticism I like to receive on my own drawings)-- I am not great at big-picture stuff. I hope it helps!