What they will see:

Write something meaningful! like Lorem ipsum dolor sit amet consectetur adipisicing elit.

Customising:

Photo (optional)

Your text

Background Type

Background colours
primary secondary

text container

colour

Preview/Download Html

How to upload with netlify
On a phone, Save the html to files and select it when asked to drag and drop
(or you can send it to your person on whatsapp or another way that lets them see files)