Over on FanFiction.net lies what is perhaps the best and most terrible (in what it has done to my brain) fic I have ever read, the great "Harry Potter and the Methods of Rationality" by Less Wrong [link]

And so, of course, I decided to pay tribute the only way I know how.

The story takes place in Harry's first year, but since I can't draw, I had to use the base pictures I could find, so they look a bit over eleven.

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This picture, Hermione Granger's Sunshine Regiment.

EDITED to include Hermione's shield-breaking spell.

Also in the series:
Harry Potter's Chaos Legion [link]
Draco Malfoy's Dragon Army [link]
A trio shot [link]

All base images courtesy of the-leaky-cauldron.org