Decorating the barn for wedding

The first picture is the barn we are getting married in the stage area is where the wedding will take place on each side where you can see light we are going to have bales of hay coverin it up so people can’t see through their also behind the stage we are having our background of double doors and lighted sheer curtains hanging. What we can’t decide is what to do with the rafters I like the idea I shared but where can you fine tulle in bulk to do that to the ceiling we have lights to hang from the rafters but I don’t know where to buy tulle also.