Please be patient with me, I have an extremely hard time with self expression 
I am not good at like, observing a thing and putting my interpretation onto paper. I try a lot, but it never meets my (probably impossible) standards. This really started to frustrate me recently, so instead I started just drawing interesting shapes and filling them with patterns. The image attached to this post is an example of one.
But now I have these little sketches that look cool to me but feel unfinished. I don't know how to develop them any further. If I try, I feel like I ruin them.
And then it dawned on me: I don't have a fucking clue what I'm doing. I've been trying out art as a fun hobby for the past 2 years. I read a couple of textbooks and took notes, I've filled a few sketchbooks, painted a little, and had a great time. But I can tell I'm still shit and I want to be good. How do I do that? I guess I have a few main questions:
-What should I spend my extremely limited practice time on?
-How can I incorporate the things I like about others' art into my own? Do I just straight up try to copy them?
-Some people I've asked irl have said it's just a matter of time. I haven't been creating long enough to be good yet. Is there any truth to this? Am I just impatient?
Here's some more of those weird sketches if you're interested. I can also post some more uh... grounded? art for comparison?
spoiler
If you have interest in drawing things with a sense of mass and construction, which it seems like you do, download Fun With a Pencil by Andrew Loomis. It’s free. There’s like three racism caricatures because it’s from the 30s, so trigger warning in that, but other than that it’s very useful for training your brain to perceive mass and think in 3D. Don’t front through the book. Do an exercise then do something fun that’s sort inspired by that exercise, then when you feel ready do the next exercise.
Yes it’s called a study. You copy it as closely as you can and then later your hand remembers certain things from it. The more you copy the more your hand remembers. This applies to all things drawn from observation. Draw enough horse skulls and, when given a blank piece of paper and no inspiration, your hand will naturally want to draw a horse skull.
Also try to draw with your elbow and shoulder, not just your wrist.