Practice (Edited text)

Y'all probably already saw the previous post, but I couldn't edit it because it contained images.

(Context) : A tattoo shop owner said I should make 10 pages of tattoo flash with separate pages of the sketches to trace and make a finished product. (He said I had to copy other artist's drawings to practice and understand the american traditional style and its rules. I promise I'm not copying art for upvotes 🙏🙏)

What tips do you guys have for me and what corrections could you add to what I have done already? I also included one piece that I found on this sub that isn't necessarily american traditional, but I wanted to include it in my portfolio. Anything would be helpful, I just want to learn what I could do better regarding line thickness, line stability, anatomical problems, and the overall flow and feel of the pictures. Thank you so much 😃🫡