Konichiwa!

Subete no Minasan kon'nichiwa! Watashinonamaeha Ematoiimasu(desu).da to watashi wa15-saidesu ^ ^ Watashi wa K poppu to dansu ga daisukidesu. Shōrai-teki ni wa watashi wa Kankoku de dezainā to shite arebata ni ikitaidesu

すべての 皆さん、こんにちは！私の名前はエマと言います（です）。だと私は15歳です^ ^

I think that it seems to be natural to be separated "my name is Emma" and

"I'm 15 yo." in this case.

私はKポップとダンスが大好きです。
将来的には私は韓国でデザイナーとしてarebataに行きたいです。

The end of the sentences is put in order desu or masu in this topic.

Because you used "desu" before.

And thank you for your comment on my topic!

Tack så mycket!