i have had a look and have nothing that says "product_template.liquid" I have gone throw every code that starts with "product" and used Cntrl + F to find "Add to cart" to place the link above but nothing comes up 

Hi, I have tried this multiple times and it doesn't work. I am using the Spotlight theme on shopify so not sure if that's why? Any other codes that would work would be amazing.

How can i add a variant so that my customers can put their name in for custom items I'm selling? For reference, I'm selling a dried floral mirror - I'm wanting customers to be able to personalize the item by adding their names if they are wanting too...