Hi,
No, that is not the correct way to write the sentence. The sentence contains grammatical issues.
I believe, the correct sentence structure is:
Charlie was mildly amused at how careful Jared was with his appearance; it just wasn't Charlie's way.
But, in another perspective, no change could also be correct.
Faith xoxo
He was an American poet, essayist, and a journalist. Also he was a humanist, he was part of the transition between transcendental ism and realism, incorporating both views in his works