Translation help for teacher card?

I'm making a card to give my Japanese teacher before the winter holidays. I thought it would be special to write in Japanese.

Here's what I have so far:

[On the cover]
ありがとうせんせい!

[On the inside]
せんせいへ
(ください)たのしいきゅうじつを
さくねんはたいへんおせわになりありがとうございます
らいねん楽しみにしています。いまさびしくなります。
メリークリスマスとあけましておめでとうございます
ソウルより

How does it sound? Any suggestions?
I'm a very beginner student so sentence structure is very hard for me ^^;

I am unsure if I should put "ください" at the beginning or not...I would like it to sound like "Please have a fun holiday" but I am not sure if this translates correctly into Japanese. Additionally, I can't write many kanji yet so I'm going to write the message all with hiragana.

It looks good! The card will make her/him happy.
Before new year, you can not say あけましておめでとうございます but よいおとしを.
To put "please" at the beginning, use どうぞ in this case.

せんせいへ
どうぞたのしいきゅうじつを
ことしはたいへんおせわになりありがとうございます
らいねん楽しみにしています。いまさびしくなります。
メリークリスマスとよいおとしを
ソウルより

Awesome; thanks very much for your help! ^^