Salander strolls into the practice room and looks around. Several students seems to be busy getting homework done much like he was. He settles down by a desk and takes out a simple, silver pocket watch. He then turns to draw out his wand, points at the pocket watch and with utters "Cometa"

Nothing.

He frowned and he utters it again "Cometa". The Silver pocket watch just stared blankly back at him

Scratching the back of his head, he flipped open his notes to try to see what he was doing wrong. Plenty apparently. He was mispronouncing the spell and worse he wasnt even doing the wand movement

He practiced with his wand over and over in the air. A cross, a circular turn and a jab. Complicated it was.

With his notes still open, he turns his attention back over the pocket watch and performs the wand movement as he uttered "Comletia"

The pocket watch flips on its edge, spins and clatters down on its back as it changed into a silver colored compass.

"Haha!" the Slytherin lad grinned as he marveled at his little transformation. Scooping up the newly transformed compass he tries to test it as he moves down the corridor.