Adding Bespoke Text Box to Product Pages

Site URL: https://turtle-snail-l68d.squarespace.com

Hey there! 

I am creating a website for a faux floral shop, where a lot of the florals have to be cut down to size. Customers need to have a box where they can give notes when purchasing. 

I have tried adding a form in 'additional info' but that send the request to the email address linked up and not to a particular order. 

Is there anyway that I can have a code for this? Just need it to be a simple text box that I can add to all product pages that state that is there are any messages/notes that can be full-filled when buying. 
Hope this is enough information! 

Thanks in advance! 

You can add a Custom Product Form to each product where notes are required. The form will appear after the customer clicks the Add to Cart button.