So I have completed filling out a form created for me by someone else and then I signed the document using a document that is a picture of my signature. I then saved the document. I realized I needed to make some changes to the document but can't figure out how to remove my signature to edit anything. The entire document can not be edited anymore and my signatures can't be deleted. The document is locked (by whoever created it). I just want to go back and change a few things. Help! Thanks!
You could refer the following thread which describes on how to clear the signatures.
However if the PDF is locked you would unfortunately be not allowed to clear or edit your signature as it is created by someone else.
You would need to unlock the PDF in order to edit your signatures.