1. First, write your signature on a piece of white paper, take a photo with your mobile phone and save it in the computer.

2. Right-click the DOC document, double-click to enter the document, click Insert, click Picture, find the saved photo, and select Open.

3. Click the text around the bottom of the picture tool, select it to float above the text, and then click the box to resize the signature as needed.

4. Finally, click Save in the upper left corner to complete the handwritten signature of word.