貌
=
豸
+
白
+
儿
:
Sun Wukong (儿) has transformed into a bug (豸) overnight and wakes up in the aorta's bathroom (ao4). Suddenly Mahatma Gandhi (m) enters and as he sees this weird appearance (貌) he quickly walks towards it. Sun Wukong feels very helpless and is very afraid, so he waves with a white flag (白). Fortunately Mahatma Gandhi is very polite (貌) and asks whether he can do anything for the bug.
相
=
木
+
目
:
Mnemonic symbol: I take "eye" and "tree" as resembling an ent, an alive tree. Xi Shi (xi) portrays (相) an ent (相) in the anglepod's bathroom (ang4). Unfortunately she's really bad at painting, and her portrait resembles more a Christmas tree (木). The Eye of Providence (目) enters and, just from the shape of the Christmas Tree, instantly recognizes its own portrait (相).
you can't judge a person by appearance (idiom) / you can't judge a book by its cover / often in combination 人不可貌相,海水不可斗量[ren2 bu4 ke3 mao4 xiang4 , hai3 shui3 bu4 ke3 dou3 liang2]