Email Workorder

I have an app for work orders that needs to be emailed to the customer when the work is complete with photos and a map.

Where do I begin?

a status (Enum-active/complete) column on the orders table
initial value active
action to set the status to complete

workflow to send email
triggered on updates only
condition [Status]=“Complete”

the photos needs to be in a child table
you access the photos in the template by using a Start-End expression