First, you will need to do at least a Google search, words and/or image, to be sure you won’t run into any copyright or trademark issues. You can also search records at the U.S. Patent and Trademark Office online and the Copyright Office online. It may sound silly, but it could end up costing you a lot of time or money if your idea is infringing on someone else’s work.
It is traditional, among English-speakers, that at a birthday party, the song "Happy Birthday to You" be sung to the birthday person by the other guests celebrating the birthday. More specifically, the birthday person is traditionally presented with a birthday cake with lit candles, with the number of candles sometimes corresponding to the age of the person. After the song is sung (usually just once), party guests sometimes add wishes like "and many more!" expressing the hope that the birthday person will enjoy a long life. The birthday person may be asked to make a wish ("Make a wish!")—which he or she does silently—and then is supposed to blow out the candles. Traditionally, blowing out the candles is believed (or is considered a lighthearted superstition) to ensure that the wish will come true. Once the candles have been blown out, people may applaud, after which the cake may be served, often with the first piece being served to the person whose birthday it is.
We downloaded the available Mac greeting card programs – there are only six we could find that keep their software up to date and seemed safe to download – and tested them over the course of several weeks. In total, we spent about 40 hours designing cards and playing with the programs’ features so we could make well-informed comparisons between them. We created some event and holiday cards from scratch and with the provided templates. In each program, we also made invitations to a summer ice cream party to see if the software could help us make the designs we had in our heads a reality.
In the 30 Rock episode "Goodbye, My Friend", TGS cast members begin to sing the song following an announcement about the royalty fee for singing "Happy Birthday to You" on a television show. The cast is interrupted after the first line by a character entering the scene. In the Community episode "Mixology Certification", a scene starts with the last two words of the song ("... to you"), implying it had been sung in its entirety, before Pierce confusedly asks, "How come we only sang the last two words?"
In the United Kingdom, Ireland, Australia and New Zealand, immediately after "Happy Birthday" has been sung, it is traditional for one of the guests to enthusiastically lead with "Hip hip ..." and then for all of the other guests to join in and say "... hooray!" This is normally repeated three times. In Canada, especially at young children's birthdays, immediately after "Happy Birthday" has been sung, the singers segue into "How old are you now? How old are you now? How old are you now-ow, how old are you now?" and then count up: "Are you one? Are you two? Are you ..." until they reach the right age, at which the celebrant says "yes", and everybody else, who presumably know the right number, all cheer.
This card has optional greetings: Happy Birthday!, Happy Belated Birthday!, Thank You!, Thinking of You!, Just Saying Hi!, Get Well Soon!, Bon Voyage!, Have a Great Trip!, Merry Christmas!, Season's Greetings!, Happy Holidays!, Happy New Year!, Spring is Coming!, Welcome Spring!, Happy Spring!, Warm Wishes!, You're Invited!, Good Luck!, Congratulations!