It was a no brainer. You'd curse your older sister. Luckily getting a piece of hair was easy. You went to the bathroom you and your sister shared and found in her drawer. Her brush with this morning's hair still on the bristles. So you pluck a few strands of her blond hair without being seen. Hard to explain why you need your sister's hair. Back in your room you tape the strands to the doll like the instructions told you to.
"Age contra, transformatio" you shout but not loud enough for other people in the house to hear
You expect the doll to glow or something. When you dont, you check real quick to see your sister not looking a second younger.
"Piece of junk. I shouldve know a voodoo doll in a Magic shop wouldve not worked" you say looking at the doll.
But you remembered. The tag mentioned you had to say how fast or slow the person would grow down. You thought real hard whether to make the changes noticeable by the minute or hour so she'd notice it sooner? Or do it slowly by the day , month or year so you had the time to stop the curse. In the end you made her regression 1 year per...