get fake daisies
remove the stems, and the back that holds the flowers together
stick the flower through the headband, apply hot glue, and stick the green part that holds the flowers together back on. this will ensure that the flower doesn't ever fall off
cut off any excess. cut off as much as possible to make it comfortable
do these steps for as many flowers as you want on the headband
cut out a strip of felt to put over the back of the headband for comfort, and hot glue it on. you're done!