Love the fluidity of these. It's clear that you're keeping loose, and that's something that a lot of artists our level struggle with!
Don't be afraid to draw bigger. Early on, it's important to avoid the habit of only drawing using your wrist or even elbow. Make sure to experiment with drawing at different sizes, and try to draw using your whole arm. This will help you in a lot of respects, but one of the immediate benefits is that you'll be able to go back in and add more structure and detail to further refine your drawings.
Thanks for sharing. Keep posting, and keep up the good work!
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