Here are some steps you can take to help ensure proper display and alignment of your Outlook email signature:

1. Check for signature formatting issues (i.e. images, text formatting, etc.)
2. Ensure that image size is appropriate for the email window
3. Check your display settings to ensure that signature displays properly in the message window
4. Ensure that signature appears correctly in both Plain Text and HTML modes
5. Check your settings to ensure that your signature appears at the bottom of the message
6. Ensure that your signature is properly centered in the message window