Create a new file, press the D key, and the foreground color will be filled with black. Open the picture, create a selection, feather 45 pixels. Ctrl+T resizes the picture. The opacity is adjusted to 50% to create a night atmosphere. Select the moon again and feather it into the picture. Select the theme picture "Ship" again and feather it into the picture. Enter the text. Transplant leaves used as writing pens. Format the text to make it into a graphic, and Ctrl+J copy the layer; Every time you copy a layer, hide the next layer, erase one stroke, and so on, erase all the strokes.
The above steps do not include the specific production process of dynamic signature. If you want to make a more professional dynamic signature, you need to ask professional designers and technicians for help.