I believe that there is a certain etiquette when it comes to sending out your holiday cards. You should (for the most part) send them to the same people every year. If someone always get a card from you and then suddenly they don't they will wonder what happened and why they didn't get one. I don't send out a ton of holiday cards, I try to keep it to my best friends and people I know I won't see between when I send them out and January 1. Also, I believe they should go out after Thanksgiving. Similar to how I don't like to play Christmas music or change my fall decorations until after Thanksgiving, I don't send out my holiday cards until at least the day after. Be sure to hand sign your card, even when sending out a pre-printed one. The second thing you should handwrite is your return address on all the envelopes/cards. It just adds a special warm touch that you can't get with the pre-printed return labels. Other than that, get creative and just be sincere.
When it comes to design I tend to take a more simple but elegant approach. I love the designs of the holiday photo cards from Minted. The designs are clean, simple, and modern. They have so many different options to choose from and they are offering 15% off and free recipient addressing until Tuesday 11/25 with the code HAPPYHOL15! I love the little details they offer like festive envelope liners and customizable options to add your personal touch to each and every card they offer.
Some other cards I love:
This was a sponsored post, but all opinions are my own.