Congratulation

Here are some expression of congratulation :
Congratulating : 

1. congratulations on your success!
2. Happy Birthdays !
3. Happy New Year !
4. Happy Wedding!
5. May I congrulate you on your success?
6. Can I congrulate you on ...........?

Your Response :

1. Thank you.
2. it's of you to say so
3. Thanks a lot
4. Thank you very much for saying so.