Having a twin brother now was actually boring especially if he looked and acted exactly like you. A younger brother on the other hand would be fun. But not make yourself older.
You then point the wand at your twin and tell it "Make him younger"
"Hey. I just was made. I dont want to be little" he yelled
"Te-he I think you being little is more fun then being the same as me" you respond
You watch as his body starts to retract into his body as his body begins to shrink. It was weird. The more he got younger the more he began to look like your old photos. You watch as your twin continue to get younger before your eyes.
"I wonder how young you'll get?" you said as you realized you never were specific on age.
He continues to get younger until he was the perfect image of when you were...