How to create a document that requires recipient signature, followed by sender signature

Hi folks, 

First time poster, thanks in advance for your help. I'm creating a patient agreement that will be emailed and sent to patients requiring their completion and signature, then returned to our office for my siganture. What tools and formatting should I use to ensure the patient signs their portion, DOESNT sign my signature line by mistake, and allows me to sign upon receipt of their completed form?

Many thanks!