Here's what you'll need:
a pair of scissors
hot glue guns and glue sticks
Flowers of your choice, and a ribbon to fit your head
Cut the flower of your choice from the stems, I chose some big blue roses. They don't exsist in nature and are a sign of rare beauty, plus they screamed Lyanna Stark to me.(Specifically, her crown of blue winter roses, when she was named Queen of love and beauty by Rhaegar, hmn possible cosplay/costume? Anyone else a Game of Thrones fan?)
If you have any portruding ends like I did you'll have to snip them off as well so, you have a flat surface for adhereing to the ribbon.
You can see where I sloppily applied glue, it doesn't matter if its pretty so long as it covers a good ammount of the flower to hold it in place and not flop over. I like to get a bit of the back most petals and overlap them to great a gorgeous full look.
Make sure you place the flower buds as close together, even overlapping petals if need be, you do not want to see the ribbon inbetween the flower buds.
Wait a night to dry, and viola!
Here's a quick OOTD with the crown:
It was a lacey flower crowny spiked shorts kinda day.