How can I View/Edit/Delete existing Looks?

Open the Shop The Look App from Shopify > Apps > Shop The Look. Once you’re on Shop The Look Dashboard click on the “Looks” from the Top navigation:

Once you’re in the Looks list, you can click on the titles, it’ll open the Look Editor so you’ll be able to edit the Look easily. If you want to view the Look on live store, simply click the “ View  in Store “ button. And In case you want to remove the Look simply hit the “Delete” button to remove it permanently.