when we say "Happy ****"in English, we translate "**** happy"in chinese according to its meaning. eg. "Happy SANKRANTI", "happy"=快kuai4乐le4 SANKRANTI 快乐 or SANKRANTI 节快乐。 or “桑sang1格ge2拉la1提ti2”节快乐。 节jie2=holiday eg. "Happy New Year" New Year=新xin1 年nian2 “新年快乐” eg."Merry Christmas" Merry=Happy Christmas=圣诞or圣诞节sheng4 dan4 jie2 圣诞节快乐！ or 圣诞快乐！

What's your question? I'm puzzled.

One supplement: you may safely put forward all the things you want to make a wish for, and leave the descriptive words behind. e.g. 新年 好 祝您 身体 健康， 阖家 欢乐