Open the Word document
Place the cursor where you want the signature
Go to the Insert tab
Click Pictures if you have a scanned signature image
Select the signature file and insert it
Resize and position the image as needed
Go to the Draw tab if you want to sign manually
Choose a pen or pencil tool
Draw your signature with the mouse, touchpad, or touchscreen
Go to Insert tab and click Signature Line if you want a signature line
Fill in the signer details if prompted
Save the document
Go to File and click Save As if you want to keep a signed copy separately