Because it’s redundant. The word “how” already contains the idea that you’re speaking about the “quality” of the thing you’re showing. Quality in the original sense of the word, meaning “the distinctive character of something”.
The word “like” is used to express that you’re comparing one thing to another in ragards to the distinctive characater of the other thing, but you’ve already established you’re doing that with the word “how”.
Because it’s redundant. The word “how” already contains the idea that you’re speaking about the “quality” of the thing you’re showing. Quality in the original sense of the word, meaning “the distinctive character of something”.
The word “like” is used to express that you’re comparing one thing to another in ragards to the distinctive characater of the other thing, but you’ve already established you’re doing that with the word “how”.