Trigger Email X Days After Complete Fulfillment

Any help is certainly appreciated. I am attempting to create an automation (flow) with these steps.

  • When order is created check to see if it’s first order (got this).
  • Check to see if the order if completely fulfilled (all items). Dont got this (at all).
  • Wait “X” days (got it)
  • Send and email (got it)

I am struggling to find a critera that matches? Any idea what I am missing?