The process of sewing clothes is the following:
-First of all, you need to have the materials for the clothing you want to sew. You can get these materials from the surrounding shops.
-After that, you can sew the item on the selected machine.
-Once the item is ready, tap on Tom, the delivery boy, to have the clothes delivered to your shop.
-When Tom arrives to the shop, you can tap on him again to place the clothes on the racks in your shop.