She hadn't continued practicing just yet. Instead she just sat back and watched the others practice and try the spell. It didn't look that hard and she might have forgotten herself while she stalked the others. Then when the cute professor said that they were doing well, she just blinked and snapped out of whatever she'd been caught up in.

Straightening in her seat, the fifth year rummaged in her bag trying to find something to throw in the air.... or at someone? That could work, too, yeah? It wouldn't be pointy or sharp. maybe. Her bag was full of stuffs and she got a little bit distracted by them but finally retrieved a paper clip. Not dangerous nor too valuable.

Pushing her seat a bit backwards, Cassia held the clip in her left hand while she gripped the wand with her left hand.

After repeating the incantation a couple of times in her head, she finally tossed the clip upwards, and with a slight angle to her side, she uttered, "Arresto Momentum!" And wand movement.

She kept her eyes glued on the little thing and nodded approving and glad seeing that it slowed down before hitting the floor. Good.

Not to try and make it freeze. She got up and went to retrieve it from where it fell a feet away.