You should try working on your brushwork. nothing wrong with staccato brushwork but you aren't using it in a way that helps to clearly define the form of what you're drawing, so it just looks haphazard and lazy. Its' probably symptomatic of you overall line confidence while drawing in general. It doesn't look like your sure enough about the information your'e trying to put down, or your ability to record it, to make any long, accurate and impressive strokes.
Those eyes look like straight up symbols, instead, keep in mind the folds, peaks, valleys and the 3D sphere underneath the skin that make up an eye. The same thing goes for the lips, think about the forms and planes , less about the fact that this is a mouth, or these are lips or this is an eye.
Measure your reference more accurately, that neck looks like a tree trunk compared to the rest of the drawing, especially in comparison to the body.
Work on your forms, keep in mind that everything in your drawing should have a front, sides, a bottom, a top. I can see that in the overall from of the head, for the most part, but everything from the chin down is a flat mess.
Good luck anon.