First sign with your signature an Blank sheet of paper.
Scan the image with a scanner.
Save the file as a jpg or png (preferred). file save at 150 dpi (n what ever image editor you have).
Now open stamps feature in acrobat.
Locate the file you just created.
fix the size height and width.
Then move stamp position to proper location (on a Mac Laptop, you can use the up, down, left, right arrow keys to nudge the stamp to exact position on Desktop machine with extended keyboard use the Home keys usuall clustered spearately in inverted T pattern).
Apply stamp.
Save PDF.
