any suggestions on this character design?

so i'm figuring out what i'd like to be the final design for my oc sebastian, and i did this illustration of him with his pet peacock. i have some ideas on where i'd like to take his design, but i'm also interested to hear more of what people think i should consider altering or editing to help the image read as fun, colorful, friendly, and welcoming. i'm glad to received feedback on basically anything (including light/dark values and contrast, color choice, lineart style, anatomy, gesture, silhouettes, posing...literally anything art related that you think could help the design). thanks so much for your help ❤

Oc Artwork

I feel like the rendering is off in some area, please help

Portrait

Stylized vesrion

Portrait

Adding more contrast to the shadow side.

plague

did some stuff, idk what i did just tried to darken it, ignoring the backround here, i was wondering how icould seperate the values betwen the cloak and the arm thingy better and make the plague masks values seem more refined looking rather than a bunch of random strokes, idk if i should just use less values since its far away or if its just an edge thing, and id apreciate general advice how to make this more polished

House sketch

Hello everyone! I want to polish this and get rid of all the flaws!

Independent work

Hi! I have started my journey into digital rendering a couple of weeks ago. This is my latest drawing. I would like some help to understand what i'm doing right and what i could be doing better. All tips are appreciated!

Practice

I had a hard time with this sketch. Can someone advise on any tips with the angle of the head? Also, any advice on how to properly replicate the texture of the ocean/wave would be very much appreciated.

The woodland scout

i think the pose is off primarily the arm thats holding the axe. other than that, i wanted to know what is lacking here that a professional would have. i would have rendered it more but i feel like its off already at this stage. usually i would explore many ideations before going into detail but i wasnt sure if i could meet the quality so i made this. (also i have no idea what category to put this in)