自頂向下

自 = 丶 + 目 : Mnemonic symbol: a hand mirror, which someone uses to look at themselves.

The Eye of Providence (目) is looking at itself (自) in a handheld mirror (自) in the space station's bathroom (Ø4). It think it's indeed looking very good, since Zorro (z) attached a petal (丶) to its eye (目).

顶 = 丁 + 页 : Dorothy Gale (di) is taking care of the receipts (页) inside of the engine ((e)ng3). She has a big nail (丁) on her head (顶) and every time there is a new receipt, she just pierces it onto the nail.

向 = 丿 + 冋 : Mnemonic symbol: there's a genus of mahogany trees which produce "向天果" or "sky fruit" because, well, they directly face the sky.

向 = 丿 + 冋 : In anglepod's bathroom, Marie Curie is being held up at the border control post because she tried to smuggle a sky fruit in a banana.

向 = 丿 + 冋 : Mnemonic symbol: there's a genus of mahogany trees which produce "向天果" or "sky fruit" because, well, they directly face the sky.

向 = 丿 + 冋 : In anglepod's bathroom, Marie Curie is being held up at the border control post because she tried to smuggle a sky fruit in a banana.

向 = 丿 + 冋 : Mnemonic symbol: there's a genus of mahogany trees which produce "向天果" or "sky fruit" because, well, they directly face the sky.

向 = 丿 + 冋 : In anglepod's bathroom, Marie Curie is being held up at the border control post because she tried to smuggle a sky fruit in a banana.

下 = 一 + 卜 : Mnemonic symbol: from the up/down logic, and a little bit the shape of the character, a ladder.

Xi Shi (xi) is on a retreat in the ashram. Using a voodoo staff (卜), she divined that next (下) week she'll have to play the flute (一) sixteen hours per day. Because she hates playing the flute, she climbs over the ashram's bathroom (a4) wall using a ladder (下) to escape.