I love the look of big bows on adult heads! Maybe because it reminds me of getting all dressed up for church when I was little in the late '80s-early '90s time period. You just weren't finished getting ready unless you had a huge bow! I wanted to make one on a head band for myself, so here's the instructions, (though it's pretty straight-forward).
(Sorry for the lack of pictures, I completely forgot to take pictures in the process, but hopefully the instructions will be clear enough)
What you need:
Fabric (in color of choice, and amount depending on how big you want you bow)
Sewing Machine and thread