Chop the chocolate(I used a small bag).
Pour in hot water.
Sit the white chocolate bowl in hot water,until it melts.
Pour the melted white chocolate into the plate.
Put in the cutting film.
Put it in the refrigerator.
After 3 minutes,put the plate on the table,take out the cutting film,and put it in the refrigerator.
Remove the mark in five minutes.
You can continue to melt the rest,and then cut off after solidification.