АЛ
Аленка Лысенко
Ай гот ит олл фром (джаджин бай) хис фэйс
I got it on his face
I have understood everything, looking at his face.
Или:
I have understood everything over his face (all over his face) В смысле, all вместо "everything"
Если важна именно эта форма, без дополнит. глаголов, то - второй вариант
I understood it all over his face
I got it on his face
He comprendido todo por su persona
His expression told me all.