Sand Castle

He builds a castle out of sand
Feels it crumble through his hands
With every grain that falls away
The walls collapse, to his dismay
The windows cave, the doorway snaps
The roof gives way, too quick to catch
The parapet all too soon falls down
The moat, the castle's sand, does drown
And before he can even say goodbye
The water's taken to the sky

We can infer from this verse that the author is bad at building sand castles.