You wont get that tight of curls with hot rollers. At least i never can.
Blow Dry hair
Put crown of hair in big velcro rollers for volume.
While crown of hair is in rollers, start curling small sections ofhair with a smallcurling iron.
Set with hair spray, take down top layer, curl them.
Also, i would only the end half of the hair. Liek her hair, only the ends are curled, not the top.
i also wouldnt run my fingers through ti once your done, since her curls seem to be fairly tight at the ends.