- fill in the fields above
- select copy
- open Gmail
- open settings (gear in top right)
- press 'See all settings'
- stay in the 'General' tab
- scroll down to signature
- create new
- name it
- paste into text box
- set the default signature for new emails and replies/forwards
- When you are composing an email, there is an option in the bottom right (image of a pen) that lets you choose between signatures.