An artist asked about edges in the comment of my last posting, here is a little bit of my thoughts about the edges, hope it will help.
There are many differences in degree from hard edge to edgeless. The edges are related to values, and we do have a couple of principles for applying the edges when we paint something:
Harder edge for form shadow; softer edge for cast shadow; sometimes no edge between the form shadow and cast shadow.
Apply harder edge if you want to create something closer, apply softer edge if you want to create something further.
Of Course, there are a lot more we can talk in detail about the edges. .. The values and edges are like the notes of the music, bouncing around on your canvas, good artists compose them to a beautiful music.
Leave your question in a comment if you are interested in my thought about the question, I may share in my later posting when I get a chance.
By the way, I did not like the head part of my early painting “Figure Series 12-01” on February 17’s posting, I repainted the head and reloaded the image, I think it looks better than before :)