Magento 2 Email Template Changes

I have a visual design mockup (flat graphic) which shows how I want to move some things around on a Sales Order confirmation template. Moving company address into the header, some formatting, etc. Wil require creation of a new template derived from the standard sales order confirmation and then some adjustments to the HTML that's all. It requires no new data, no new logic, just moving some things around and adjusting CSS NOTE: Instant commencement required only interested if work can commence right away.