Temari-hime,
Ino helped me with finding it so she says I have to write that it's from the both of us.
But really, it's from me.
Happy birthday.
Yours truly, Shikamaru
The suffix 'hime' means Princess, so he's calling her Princess Temari.
This is short because it's the card that went with her gift. there's a seperate letter that accompanied it.