I like the story-line! I just have a one critique.
1. Maybe try to cut down on run on sentences.
I woke up beaming. "HOO-" I began to shout when my parents glared at me. I mouthed a simple 'Sorry' and started to get ready. My hyper sister, Emma, wailed about some bad dream.
Try like that.
DO NOT CRITIQUE THAT ANYONE I WAS POWER-WRITING :3