Help request

Hi there, this is my first time sharing here. I don’t know if I can share my study works instead of “finished artworks” (I hope so), but i need to ask for advices to go forward with the beginner paths and improving with perspective, proportions, gestures etc. As you can see I’m trying to build mannequins but they seem not as believable as I’m looking for and every time I draw one of them I don’t know where to start to improve. Until now I was thinking that is because I didn’t understand the theory of perspective, but when I go back to the perspective exercises I’m able to do those, so I think the issues occurs when I don’t have the perspective grids and the body with the natural gesture make me confused by no longer having “solid references”. Looking forward to have some advices to improve it, thanks

Studying value organization with that one checkered optical Illusion.

I find myself overthinking if the values are light or dark enough. God help me if i have to start coloring.

Dress drapes

I'm having trouble creating the "spiky drapes" at the end of her dress, especially at the front ; also the skirt is meant to be very tight around the thighs and pelvis/waist, are the lines right here ?

Ship and waves

I dont know how to improve it substancially, maybe the waves look weird?

MONKEY

I am struggling making this monkey have powerful impacks on the ground if you any suggestions that be helpful.

Gobtonio

Revision! Decided to change teeth so they look less vampiric and more goblin like.

First colored portrait

This is my first ever colored portrait. Feels like my values are way too light, wanted to make it darker but I just can't get it right. The ear is kinda bad, didn't take my time there it was mainly a coloring/value focused practice

Drawing Faces

I’ve been practicing drawing for a year, specifically faces. I feel that I have improved a lot, but often my drawings seem out of proportion or with the perspective poorly made. I have a hard time finding the right angle for my eyes, despite practicing Loomis. And the features often feel out of place. This particular practice has lasted 30 minutes (5 minutes per head), and I tried to stylized it a little bit, but I would like feedback on which things to prioritize when representing the angle of the head and its features. Thank you very much!

Leonardo (the turtle one)

Lines values and forms a bit off I think.