Save your file to your computer as a .pdf

Click Settings > Media > Open Media Library

Click Upload File

Select the file on your computer and upload

Right-Click (Control-Click on Mac) on the file and select Copy Link

Open Automations > Workflows

Click "Free Offer Delivery"

Select the Free Offer Delivery email

Highlight the words "download here"

Click the link icon in the email editor and paste the link you previously copied.