It's simple. I have done it myself. You use an aluminum sheet (I used to wrap candles to incense the outer plate), fold it into the shape you want, and lay it flat on a relatively flat plate. Try to ensure that there is no gap between aluminum sheet and plate, and this mold will be fine. Then put the chocolate in a small pot and light it. In order to make the chocolate melt and become liquid, pour it into the mold, put it in the refrigerator, gently connect the aluminum sheet, and move the chocolate after it is completely solidified. The chocolate on the plate will be especially smooth and shiny. If you want to engrave, just engrave with a knife. I made one myself. That's right. In order to ensure that the chocolate is intact when it is sent out, it can be packed in Xibo paper, which is sold in the supermarket and should be on the same shelf as the plastic wrap.