I wish I had taken pictures the first time I did this because it was much neater, but this time I was (once again) trying to rush it for school in the morning. But this will give you the idea anyway.
Begin by using your comb to draw a part in the shape of a heart on the crown of the head. Secure the hair at the point with a little hairband.
Belle's hair needs a side part in front for her cowlick, but you could part the front in the middle if you like. Part the leftover front hair straight up from the ears. Twist it up toward the heart. You can just twist it all at once rather than adding more hair each turn this time. Clip, like before, and repeat on the other side. Band it all together. Add a bow if you want.