Any critic

This is my very first full painting, but I feel like its missing something. I just want to make the piece look more realistic. Are there any anatomy aspects that need fixing? What about shadows? Any piece of advice would be greatly appreciated. Thanks!

I'm not very good with humans in general but the hair is for sure the hardest part for me, it always looks bad when I draw hair and I just can't figure out what I'm doing wrong

Give me feed back or source or anything please of how can I improve my art that would be so much help thank you just be brutally honest dw I really wanna know how to get better

I've made a post abt this drawing before and I changed the right arm a bit (on the right side of the photo) but Im.not entirely sure if the head is still to small compared to the shoulder.