Havent looked at your Polybook for a while, your sculpting has improved since I last checked it out 😊
I do have the feeling the ears in your sculpts are a bit too low on the head (though please do look at reference to see if I’m right, I am by no means an anatomy expert. I’m glad I even know it’s called an ear haha!). Also they feel a bit to flat against the head, but that could also be the angle of the screenshots.
Keep it up dude, you’re doing great so far and I think its awesome you are sticking to your routine so well!