YOU SAID:

crawling on the surface of my skin

INTO JAPANESE

私の肌の表面を這う

BACK INTO ENGLISH

I crawl on the surface of my skin

INTO JAPANESE

私は私の肌の表面を這います

BACK INTO ENGLISH

I scratch the surface of my skin

INTO JAPANESE

私は私の肌の表面を傷付けます

BACK INTO ENGLISH

I scratch the surface of my skin