The translation of the English name "He Wenhua" is the same as the pinyin:
He,
Wenhua
(In English grammar, when the surname A comma will be used before the name to differentiate)
Generally, when introducing oneself, the first name is "Wenhua" and then the last name is "He":
Wenhua
He
(No comma is required if the first name is written before the last name)
If you want to choose a homophonic English name, you can consider: Wayne,
Wyn,
Windsor,
Winsy,
Winnie,
Wendy,
Vince,
Vance ,
Windford