How to publish greeting cards?
You can go online to The Greeting Card Association for member publishers and submit to them. If you don't happen to find the right publisher, consider self publishing your line and offering it on your web site.
How to make a quarter fold card in Publisher?
Under Customize, click the business information set that you want, or create a new one. Under Options, select the page size that you want, such as Half-page side fold or Quarter-page top fold. Under Options, select the layout that you want.