4H helps to have a smooth surface , first i use darker pencil (6B) and then i add 2h and at the end 4H,
if you use 4H you can see it is very light and even with the pressure of your hands you can't draw a visible line, so its good for shading in final step

i'm going to share steps of this work also. :)

if it comes, Let it
if it goes , Let it ...

STEPS :)

i used to draw different layers of pencils for the skin and blended some edges , and now want to start to draw hairs...

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