Can you please advise what can be corrected or done in art?

[stone relic]

I think the eyes and hair line shld be a bit lower

[sudden skiff]

I think the nose is a little big

[still pelican]

Top of the hair is kinda sunken, other than that the nose is depends on your art style so its amazing

[nimble solar]

maybe the face is a teeny bit too long. idk prob just artstyle