/ic/ - Artwork/Critique

First time posting on here. Been doing Art shit for a month (33 days). I feel like I've improved significantly since I started and here are some of my best ones. I started with a course that my artist friend recommended to me and it's been really helpful, but it's starting to get into drawing the skeleton and other stuff so, I dunno.

A major problem I feel is that I am "guessing" too much. I am understanding rules of proportions a bit more, but I feel I am "guessing" too much when it comes to placing the shoulders or eyes or how far the chin goes down. I don't really know what to do.

I'm sorry for tl;dr ;_;