If you make cutting lines in PS, for example, for a printing factory or an export company. You also need to store files in the tier. In this way, the file is not big, but also very troublesome. The best way is to make it in AI or CDR, but pay attention to the bleeding head at the cutter head when making it. Otherwise, after your knife is made, the finished product may have white edges or something, which is not beautiful. Under normal circumstances. Straight line cutting, dotted line indentation. However, an experienced master will know how to do it, and you don't need to specify it. You need to indicate the position of the cutting line in the area outside the figure, just like a line with half coordinates, so that people who do this sample will understand that there are many dotted lines in ai, which is considered as auxiliary knowledge! It's not very troublesome. All you have to do is open the picture in PS and pull the wire directly at the edge. This line can't be printed, but you can see the part you want to cut. Try it.