As an artist who has some pretty good skills (the content on my channel is outdated so don’t go there), you just have to keep practicing! You have the potential and it looks really nice. If you’re looking to improve, you Could do art studies of your favorite artist. Who’s your favorite? How do they draw? What does their line art look like? What shading do they use? Hell, even tracing (on your own in private, NOT to post) can help you understand the fundamentals better. But I will say, you don’t need to. I’ve only just started doing art studies and anatomy practice; right now, you don’t need to focus on that. Just improve what you can and have fun. Happy practicing!