It may be beneficial to enable customers to contact a brand owner through a monitored messaging service.. For example if the customer wanted a generic design customized with their business name, for their staff to wear perhaps.
Sellers should be able to choose whether or not they would like this option enabled on their accounts. As not everyone may be willing to edit their designs on an individual customer basis.
Sellers that did opt in should be able to specify a minimum quantity of shirts to be ordered before they would edit a custom job.
When a customer was happy with a design and ready to place a custom order, there should be a box for them to check, giving permission for their business name, or other details to be used.