mjhjmtu

My Japanese teacher just gave birth and our long-term sub is having us make cards to congratulate her, we need to write something in Japanese, and I want to write something different than what she supplied us with, to spice it up or whatever. What would be appropriate to say in my card?

Edit: I'm not exactly sure what I want to say, but the phrase the sub gave us was the same thing for the entire class:

あかちゃん おめでとうございます

She said we could do something different, and I want it to be something that an actual Japanese student might say to their teacher had a baby to congratulate them. I'm only in Japanese 1, so I know hiragana and some words and phrases, but not nearly enough Japanese to write anything that would actually make sense in this context.

I'll give a few simple common phrases...

[赤]あかちゃんのおたんじょう、おめでとうございます。

かわいい or げんきな [赤]あかちゃんのおたんじょう、おめでとうございます。

ご[出産]しゅっさん、おめでとうございます。

かわいい[女]おんなの[子]このおたんじょう、おめでとうございます。(← when the baby is a girl)

げんきな[男]おとこの[子]このおたんじょう、おめでとうございます。(← when the baby is a boy)

Maybe you could add at the top...

祝・ご出産

For those who want more formal phrases...

ご出産、心よりお喜び申し上げます。

赤ちゃんの or お子様の ご誕生、心からお慶び申し上げます。

新しい家族のご誕生、心よりお祝い申し上げます。

etc...