How to say this in Japanese?

Question:

I am sorry for the error in my order, it was my first time using this website.
I wish to re-order
Thank you

Answer:

>I am sorry for the error in my order, it was my first time using this website.
注文を間違えてすいません。このサイトを使うのは初めてです。

>I wish to re-order
再注文したいと思います。

>Thank you
ありがとうございます。