Creating Salesforce Flow for Task Template


I am setting up the Asana/Salesforce integration for my team. I understand that the integration can easily be set up to create a project template in Asana but I am hoping to set up a Flow in Salesforce where a Salesforce action (creating a new Opportunity) triggers a Task Template (with pre-determined assignee, project, and various subtasks. Does anyone have tips for how to set this flow up?