I'm pretty sure people already asked uoh but... which program do you use? And how long have you been drawing? I admire your art, and as I draw myself, I would like to improve so much to be maybe one day called artist :D
I use Paint Tool SAI and I’ve been drawing for as long as I can remember, only got my tablet in 2014 but started digital some years before that.
Also there’s so many different styles and shapes of art that I think the only requirement to be an artist is to go on and do the thing. So my dear, you’re already an artist, but YES that’s the spirit!
Honestly nothing makes you improve more than practicing and wanting to improve, knowing there’s so much more learn but not discrediting what you’ve acomplished so far. Keep drawing and having fun! ♡