Spike had been sitting quietly...and somewhat out of character, had been taking notes. Good, useful notes. He bit the side of his lip in concentration as the quill scratched the surface of his parchment in his scrawl of handwriting.

...there wasn't even a doodle in sight.

The whole 'final class' thing had made his stomach sink as he realised the big 'E' word (exams) loomed in the way too close future. And he actually thought he could do okay on his potions O-word (OWLs), if he tried.

So he was trying.

He peered inside his cauldron, and given it had some remains of something green and squelchy in it, scourgified it until he was satisfied. Professor Lafay probably wouldn't appreciate him blowing something up, and it wouldn't do much for confidence before his O-word. "Aquamenti!" he cast, and watched a slow drizzle of water come from his wand. Not the fastest way to fill up the cauldron - but caution was always a good thing, right? Easier to add than take away...even if it took forever (or, at least, twice as long as most of his classmates). With that done, he pointed his wand at the burner underneath the cauldron.

"Incendio!" Fire? Now that he could do.