YOU SAID:

Looking at your face you don't know what it means to glow up

INTO JAPANESE

自分の顔を見ても、輝くとはどういうことか分からない

BACK INTO ENGLISH

When I look at my face, I don't know what it means to shine

INTO JAPANESE

自分の顔を見ると、輝くとはどういうことか分からない

BACK INTO ENGLISH

When I look at my face, I don't know what it means to shine