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In these drawings, I can not tell what you have done on the faces. They look like a good start but you did not finish what you started. Go on the internet to find information on drawing heads & faces (measurement in various views). In general, from the hairline to the eyebrow is 1/3; from the eyebrow to the bottom of the nose is also 1/3; from the bottom of the nose to the chin is the final 1/3. Research your subject.

Do you have access to the heads class?
That would be a better place to focus.