Good to see more drawings!
The main issues I see are your circles/ellipses and face structures. Before doing more facial features, I would try to work more on getting the structure down. The initial circles your drawing are a little long and I think that's making the jaw a little too long. I can tell you know the measurements because you drew it out, but then you ignored it and made the jaw longer anyway.
Here I fixed the circle and corrected the proportions. You did great with drawing the mid-line and the lines for the eyebrows and nose. Like I mentioned, the only thing I had to fix was the circle and the proportion of the jaw.
If you're up for a challenge, I would do a lot (50-100) of the head structures in pen and fix your mistakes with a red pen.
I think if you spend some more time getting your forms right (spheres, cylinders, etc), you'll be in a good spot to work on the nose, eyes, and everything else.
Hope this helps!