Dear Father Christmas!
My name is (...), I'm (...) years old and I study in the (...) class of the school/Gimnazia (номер). Now I would like to ask you for some presents. During the year I have been a good girl, that's why I hope do get them.
Well, I would like to get a/the/- (название, возможно краткое описание подарка/подарков). I hope it won't be difficult to find them.
Thanks for your attention.
Happy new year,
(Имя)