Well ...
You should tell ot Blender forums for normal map not done like in others modelers !
Well not to discourage you, and don't take my thoughts too seriously

:
- Lot of work on the face, is it a zommbie ??
- The noise on clothes is strange in the pants and its is not
what will really counts for normal maps !
- no real work on clothes , missing lot of wrinckles :
there is no detail on clothes , they are plane as HEll

(only some around the tie)
Foolow this example for low poly face and for clothes normal map wrinckles :
AAA Clothes wrinckles normal map Another clothes Ok , you can go back to work and remake your model
