Open the PDF you want to sign, click the signature icon in the toolbar, and then click the signature pane. If the signature icon is not displayed in the toolbar, right-click the toolbar and select File Add Text or Signature, and then draw your handwritten signature in the Draw Your Signature column. If you are satisfied with your signature, please click Accept.
You can choose to type, draw or import the signature. Reader will use this signature in the PDF that you sign later, and click where you want to put the signature in the PDF.