1. Write your signature on white paper to form a picture file. Take a blank sheet of paper and write your name on it. The font size is bigger than usual. Make a paper signature into a picture file by scanner or taking photos and save it on the computer.

2. Preprocess the picture with PS software, open PHOTOSHOP software, open the signed picture, open the Photoshop menu, click "Image-Adjustment-Brightness/Contrast", adjust the scanned film to make the black-and-white correspondence obvious, and click "Image-Mode-Grayscale" in the Photoshop menu to remove all grayscales in the picture and save the picture.

3. Use AlgoLabPhotoVector software to vectorize the bitmap of the signed picture, trace the line outline of the signature, open the software, open the "Open File" button on the toolbar, click on the running villain to vectorize the picture, and click on the upper left corner to save it as a "dxf" format file for later use.

4. Fill in the outline of the signature with CAD software, insert the drawing frame, open the CAD software, and open the "Open File" button on the toolbar to find the vectorized signature picture and find it in the CAD model; In the CAD program, use the shortcut command "h" to open "hatch creation" and select "solid" solid color filling; After filling in, select the entire signature. Use the shortcut command "ctrl+shift+c" in CAD program to quickly form a block, and insert the formed block into the drawing frame to complete it.