To make a seal, you can go online to find relevant brushes or mask materials

If you want to do it yourself, create a new canvas (set the size)---use the pen tool or special brush to draw Draw the frame of the seal (square or round as you like) --- create a text layer --- type the name in (pay attention to the typesetting), usually in red. (If you want to engrave a seal, you need to do mirror processing, otherwise the words on the printing paper will be reversed after printing), and finally you can save it! ! If you want to modify it in the future, save it as PSD. If you don’t need it in the future, just merge the layers, remove the background and save it in PNG format!