I see that the nose and mouth are too close to the chin, and the nose is seems long.
To make the face overall more proportionate, try using 4 horizontal lines to divide the face into 3 equal parts.
So the 4 horizontal lines:
The first line is the hairline.
The second line is the eyebrow line.
The third line is the nose line.
The fourth line is the chin line.
Now the 3 parts that should be equal:
The first part is the hairline to eyebrow line, otherwise the forehead area.
The second part is the eyebrow to nose line, which would be the nose area.
The third part is the nose line to chin line, which would create the mouth area.
Make sure these three are equal, and you'll have a great evenly spaced out face.
I think you draw the individual facial parts pretty nicely. I especially like the types of noses. It looks really good :)
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