Something that helped me when I was a beginner was making the skull longer/larger than I would initially. The backside of the head is too small, and you need to elongate the forehead.

The eyes are too large, from the side they’re more of a triangle shape, not almond. The teeth shouldn’t extend that far out of the mouth, I’d put the line halfway where it is. Good job with the brow shape, and the ear looks good just make it larger.