It's clear that you did traced/copyied someone's art work, which is bad and if you did trace just tell the truth , I mean you can learn alot by coping other peoples art and then finaly when you know what and how things work in art, You can move on to finding your own style, atleast that's what I did when I started
Here are some tips that might help you:
Use the pen tool and free select/selection tools to draw clean and nice lines
Don't draw the whole head because I see that you wanted to mirror it but did not knew how to, and thats why you drew the whole head, next time duplicate the layer cut a half of it and flip it (thats how I mirror it pls dont kill me

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And finnaly please use templates, Templates make it easier to get the maping right
If you search toribash head templates on google you will find so many different types of templates which can help you.
Also please put the program you used in the op, because if It's gimp then I can help you alot.
Last edited by Clint; Mar 8, 2018 at 01:31 PM.