The English translation of "Liu Zhihua" is the same as Chinese Pinyin:

Liu, Zhihua (in English writing only, when the surname is written before the first name, a comma is used to distinguish it)

Generally speaking, when introducing themselves in English, most people say their first name "Zhihua" before their surname "Liu":

Zhihua Liu

If you want to choose another homophonic name that is closer to the Chinese name, you can consider using:

Jabril (Smart Bill) (male name)