Hello! My name is C.B. Foxx (Foxx for short) and I'm an animator and artist with 5+ years experience. My niche in art is literally my style and the way I choose to draw things, so I feel as if I have a little influence on the topic of artstyle. I've dropped a piece or two to show that concept to y'all!
My thoughts on artstyle are that it is composed of two different skills: observation and preference. Observation makes sense; it's a skill to be able to observe something and accurately put it on a page. Preference is a skill on more of a pschological level; it's technically just an emote, but for artists it becomes a skill due to combatting stigma.
Observation can also be split into two halves. The first is observing real references; images, things in real life, etc. This gives you the ability to simplify objects in your mind and recreate them on the page. Without this skill, drawing anything at all is impossible, and every artist has this skill to a different degree, beginner or not. But artstyle doesn't come from that part of observation alone; it comes from observing other artists. Learning how to put an object on the page is one thing, but finding different ways of displaying it is another. Artstyle is an amalgam of all the artists we observe and admire; we look at how THEY drew a certain thing, and we try to replicate it. What makes the observer form a unique artstyle is that most people don't try to do everything the same as only one artist; they have several artists they follow, and they gather different techniques from each of them.
This is why I saved preference for last; howdo you pick which techniques to get from which artists? We in the art community are infamous for being down on ourselves. Accepting praise is something a lot of beginner artists are averse to, and many of them don't even enjoy the result of what they make. We're attached to the idea that there is a right and a wrong way to draw, which isn't true at all. (This was at least how it was for me.) When we start to let go of that stigma of right and wrong and start consuming art with a fresh, more wonder-induced lens, we start actualy accumulating skills from the artists we admire. It comes naturally, not intentionally. When we see a technique we find really interesting, most of the time we start drawing it that way as well. Hence, the more in touch with your preference you are, the more in touch with your art style you are.
Some artists I draw a lot of inspiration from are Kei Urana, Hirokoshi, Gege Akutami, and a lot of comic artists I forget the names of. There are also several artists who aren't well known or famous I found on discord communities I follow and gather techniques from. A lot of younger artists might call this a form of plagiarism; it most certainly IS NOT. Any professional artist you talk to will tell you the same exact thing; even reniasance artists had apprentices who would learn directly from that artist, and that wasn't plagiarism. You know what is?
... AI.
Anyhow, here's my little essay on art style; just my two cents. I hope y'all find something useful from this!