I usually participate in Drawthreads on /v/ to practice. While OR's and anons generally seem to like the deliveries, I feel like I could do better.
Just dumping my personal favorite deliveries in an imgur album to see what you guys think of it. Some is hand drawn, some is with a Wacom on photoshop.
Any critique welcome. Thanks in advance.
https://m.imgur.com/a/jprph
Might as well also post some sketches and random stuff I have in my notebook.
What you're doing is just mindless doodles. Which is fine if you're having fun with it. But if you seriously wanted to improve, you'd read the sticky and get started on your fundamentals.
It takes time. Most people get discouraged and quit because they aren't Da Vinci in a year. Whether or not you turn out like them is up to you.