Not much

If you look at the little lines in the glasses extrusion you can see this stupid mistake i often make. when going around a shape i often forget wich angle i am supposed to be extruding on and the angle kinda slides....looks stupid.
i like the look of the glass despite that though.

I also struggle with the part of the bottom eyelid that touches the top eyelid when the eye closes..but i love drawing tear ducts.

I think the scratchy nature of the groupoard actually lends something to the drawing.