"THEY HELPED HIM ESCAPE, I KNOW IT!" Snape howled, pointing at Harry and Hermione.  His face was twisted; spit was flying from his mouth. (pg. 419, US)

Yeah, perspective's a little funny on his arm, but it's not about his arm, it's about that snarling face contorted in the fury of being foiled again!  Curses!

The really aggravating part is that he's right ...

Snape stood there, seething, staring from Fudge, who looked thoroughly shocked at his behaviour, to Dumbledore, whose eyes were twinkling behind his glasses.  (pg. 420, US)

Ahh, seething, what a joyful hobby.  I rather like how this turned out, Snape gives the impression of catching his breath after such an energetic outburst – at least to me.

"I saw you coming," said Lupin, smiling.  He pointed to the parchment he had just been poring over.  It was the Marauder's Map. (pg. 423, US)

For some reason I find it very very hard to draw Lupin from the right.  I think I've finally got this picture to my satisfaction, but I've changed it at least three times to get here.

Did I mention perspective problems?

Okay, okay, so this is practically identical to the other wry smile on page 6, but he's only in the book for two more pages; I've got to take what I can get.  Besides, I got such an amusing reaction to the previous one that I couldn't not draw this.

I kind of shortchanged this drawing by cramming it in at the bottom of the sketchbook page rather than giving it a page of its own, which explains but does not excuse the extremely high placement of the doorknob.