How do I sell a shirt?

You need to be in Builder's Club to sell shirts.

First, you have to have a shirt to sell.
Click the T-shirt you want to sell.
Click "Configure this shirt".
A new menu will appear.
Select the "Sell this item" checkbox.
If you want to sell it for Tickets, check the Tickets checkbox. If you want to sell it for Robux, check the Robux checkbox. If you want to sell it for either Tickets or Robux, check both checkboxes.
Enter the amount of Tickets and Robux for which you want to sell your T-Shirt.
Select "Update".
If you want to to get it more popular click on advertise this shirt.