谨守

谨 = 堇 + 讠 : Joan of Arc (ji) is reading a warning on an advertising column (讠) in the encampment ((e)n3). The warning says that she should be very careful (谨) about violet dirt (堇) which tends to fall off the ceiling. While Joan of Arc reads the message, a big piece of violet dirt is about to fall on her head.

守 = 宀 + 寸 : Sherlock Holmes just graduated from police school and stands guard in the outhouse. Still wearing his graduation cap and carrying a huge shield, he's protecting the outhouse's art. The visitors are a bit afraid of him, so he thumbs up to show them that there's no danger from him.