This can be used as both a postcard and writing paper. I used the pen tool in Photoshop to outline the patterns on the lower left and upper right corners, which took quite a long time. I can clearly feel that Photoshop is not as powerful as AI or Coreldraw when it comes to outlining graphics. However, compared to other tools, the pen tool is still pretty powerful. I added a cloud sea and mountain peaks to the background texture to create a bit more atmosphere, hehe, it's a bit elegant~. I'm truly narcissistic, hehe, it can be kept as image material.