What are the misunderstandings in postcard printing?

What are the misunderstandings in postcard printing? 1. When designing postcards, you should have a clear purpose. Postcards are designed to publicize and promote the brand of their own enterprises. When printing postcards, you must choose the one that conforms to the enterprise concept, so that the printing effect of postcards is consistent with the promotion of your own brand. So we should have a clear purpose when printing postcards. When customizing postcards, we must pay attention to cooperation with enterprises to let more people know that they care about the purpose of promoting their postcards and corporate image. Postcards can also improve the reputation and image of enterprises. Therefore, when printing postcards, we must pay attention to the purpose of promotion. Different enterprises will have different purposes, so what problems should be paid attention to in postcard design?