Step 1: Take the handwritten signature of the legal person with the mobile phone, open the Word document to be edited, and zoom the picture to the appropriate position.

Second: Click Format-Color to select 50% recolored black and white, and then copy and paste the selected picture.

Step 3: Select the picture you just pasted, click Format-Color-Set Transparent Color, click the picture, and then set the picture layout to float above the text and move it to the appropriate position.