Como esta Ud. is asking "How are you?", so you can answer with how you are.
Estoy = I am -- so you should use it with one of the following adjectives or adverbs:
It's asking what you are like/ who are you. So, you could answer with personality traits and the like.
Examples:
Soy simpático/a. (I am nice.)
Soy una madre. (I am a mother.)
Soy rubio/a. (I'm blond.)
you can answer as following. Muey bien gracias, I am good thank you.
In Spanish, "kien eres komo t yamas" translates to "who are you and what is your name?"
eres eres
Eres means "you are". Such as "You are American" = "Eres americano/a"
de donde eres is where are you from
"¿Qué" is "what" and "¿quién eres tú?" is "who are you?" in Spanish.
Are you married or not?
eres carinoso
In Spanish, "you are not" is translated as "no eres" (informal) or "no es" (formal).
What are you? = ¿Qué eres?
Eres guapo! (for male) Eres guapa! (for female)
Eres hermosa, female Eres hermoso, male
Eres el mejor / Eres el primero