How to use "どうな“ and ”どう"?

Question

Answer

I think you wanted to say どんな and not どうな.

どんな in general means "what kind of".

1. きみはどんなえいががすきですか。(kimi wa donna eiga ga suki desu ka)
>What kind of movie do you like?

2. あのおんなはどんなひとですか。(Ano onna wa donna hito desu ka)
> What kind of person is the woman over there?

どう means "how about", "how are".

1. いまてんきはどうですか。(ima tenki wa dou desu ka)
> How is the weather now?

2. ひさしぶりね、あなたはどうですか。(hisashiburi ne, anata wa dou desu ka)
> It has been a long time, isn't? How are you?

3. これはどうですか。(kore wa dou desu ka)
> How about this one?