How do I cancel a document sent out for signature?

I am a new user. 

After filling in the form for "Get a Document signed", I forgot to check the box "Preview, position signatures and add form fields" before I clicked "Send".  So, the document is now out for signature and I want to cancel it and start over.  How do I do that?

Fortunately, I had added my own email address in the "To" box as the first in the list of signatories.  I had also selected the "Order Entered" option, so it is waiting for me to sign first before it sends the document to the next person. I know that I could have used the "I need to sign" option but I did not.  I added my own address to the "To" list instead hoping Adobe would send to me an email to sign like it sends to others.  I wanted to see what it looked like.  But instead, after clicking "Send", it opened the document and is now prompting me to sign using a signature field that Abobe added to the end of the document.  What do I do next?  If I sign, it will go to the next person, which I must avoid.  If I click "I refuse to sign", what happens?  I want to cancel this "Send for Signature" so it will not go to the next person on the email list.  I want to start over and add the signature fields before sending.  Thank you in advance for your help.