Could this one be more simple? Simple but sweet.Any kind of artificial flower in the shape of a sphere will look good singing solo on the top of a shoe. Has a nice pompom effect. This is a "Lucy Ball". I think the technique word for the flower is Allium.
If you were only using it for a day (like a wedding) you could even use a "real" flower. I've read that hairspray can help to keep fresh cut flowers looking fresh. Makes sense.
If you had a couple smaller sphere looking flowers you could also pair them in threes and add a leaf or two on the side.
Pair with a spring green dress like this one.
1. Cut stem off of plastic flower.
2. Cut out a felt circle and hot glue to bottom of flower
3. Glue on clip. Done.