YOU SAID:

I just realized that if I walk outside of my window I wont be able to see anything at all

INTO JAPANESE

私はちょうど私が私の窓の外に歩くと、私は何も見ることができないだろうと気づいた

BACK INTO ENGLISH

I just realized that as I walked outside my window I could not see anything

INTO JAPANESE

私はちょうど私が私の窓の外を歩いたときに何も見ることができなかったことに気付いた

BACK INTO ENGLISH

I just noticed that I could not see anything when I walked outside my window

INTO JAPANESE

私は窓の外を歩いても何も見ることができないことに気付いた

BACK INTO ENGLISH

I noticed that I could not see anything by walking outside the window

INTO JAPANESE

私は窓の外を歩いて何も見ることができなかったことに気づいた

BACK INTO ENGLISH

I noticed that I could not see anything by walking outside the window