How do I change my signature on an Adobe Sign PDF document

Hi Simon, 

Have you received a document that is supposed to sign or already signed?

If we understand correctly, you are willing to change the signature on already signed Adobe Sign document? If yes, then unfortunately this can not be achieved. Signing is the last step, Once done you can not change it.

If you are referring to changing the existing signature of Adobe Sign, then that can be done easily. While applying the Adobe Sign signature on document, you have option to delete the existing one and recreate/Add the new signature.

Help us with more information to understand the issue clearly?

Regards,

Akanchha