No tutorial on this one, I wasn't sure if it would turn out the way I wanted it to.  There are a few things I would change.  That first ponytail that is in a triangle?  I would put the ponytail down as far as I could.  The two on either side, I would bring forward towards her face.  It will give it more of a definitive heart shape.
Instructions are simple.  Start with the top ponytail and split it in two.  Add each part to a consecutive ponytail on either side and follow the elastics into a heart shape to the end. 
Without a ribbon...

...and with.