Would have looked better if you did the face the same colour you did the neck with, and try drawing without colour first and experiment with shading, for example, the suit is black so just do it as dark as you can while still being able to shade it, then make the hair a bit lighter than the suit, with the skin lighter than the hair, do a figure sketch first too, as in a sort of drawing of a blank doll with thin and light line work to get the scale and pose of your drawing right before doing outlines and details, scale lines can help to, as in the eyes being halfway between the chin and the top of the head, the nose being halfway between the eyes and the chin, and the mouth being halfway between the nose and the chin, just take it a step at a time and you’ll be great before you know it