YOU SAID:

i will go walk my dog when i finish showering

INTO JAPANESE

シャワーを終えたら犬を散歩させてもらう

BACK INTO ENGLISH

I'll let you walk your dog when you're done with the shower.

INTO JAPANESE

シャワーが終わったら犬の散歩をさせてあげるよ。

BACK INTO ENGLISH

I'll let you walk your dog when the shower is over.

INTO JAPANESE

シャワーが終わったら犬の散歩をさせてあげるよ。

BACK INTO ENGLISH

I'll let you walk your dog when the shower is over.