This is a short story I wrote for English but it's not long enough. What do you think I can add? Opinions on it?

The remains of the house stood like a skeleton in the pale morning light. Only yesterday had it been so alive; so full of love and security. But now the wind whistles through the debris and steady train falls onto the burnt prices of old furniture. Among the dirt and ashes lay our memories.
I searched through the rubble for any items that may remain. I picked up a small rectangular block. A photograph. That's all it took for me to break. tears slid down my cheek, disguised by the rain. I clutched the rotting wooden frame tight in my hands. I noticed my ghostly reflection in the thin, broken sheet of glass that covered it. I stared past my dreary eyes and looked upon the picture of perfection. I still remember everything about that day.
I remember the gentle slope of golden sand. I remember the subtle, blue waves laced with foam. I even remember the kind cloud drifting across the pale blue sky as I chased my younger siblings into the refreshingly cool waves.
It's the happiest memories that hurt the most...

And I don't know how to finish it. I don't think it's long enough for the exam. What do you think?