Ordered vintage scalloped handkerchiefs from a Aliexpress seller and had them shipped from China in a big envelope. It said 100% cotton but I have to say it felt more like polyester due to the stiff material.
Found the flower wreath on free DIY printables from Wedding Chicks/
Printed the announcement on iron-on transfer paper. Its easy and fast but it came out to be a plasticy film over the handkerchiefs.I wanted to try stamping but I ran out of time to custom the stamp.