Inexperienced with digital art and lineart would love some pointers on anatomy and lineart!

(The last two images are just examples of my finished digital art and traditional sketches)

In most the years I’ve been drawing Ive always enjoyed just sketching out my characters on paper though recently I thought expanding my ability into finished digital pieces would look nice! I’ve always been able to hide some of my more odd anatomy behind messy sketch lines and I think it painfully shows in my digital pieces. The first image is the piece Id mainly like critique on from anyone with any sort of advice for digital art and or anatomy, perspective, ect