The secret of angry or evil emoticons is in their eyes. Just don't change the characters' order, otherwise your angry emoticon will become friendly and kind (compare: ` ´ - evil eyes, ´ ` - kind eyes). Finally, you can add such effects as thinking (・・・), raising hands (┐ ┌ or ╮ ╭) and propping the head with an arm ( ゞ).
In addition, you can add "wrinkles" ＃ and their stronger forms: メ or ╬; and 凸 (middle finger) and ψ (claws) as an arm. For scared or frightened Japanese emoticons use forward and backward slashes and similar characters showing that they hide their faces in fear. For shocked and surprised emoticons use mouth wide open (ｏ, 〇, ロ), surprised eyes (O O, ⊙ ⊙) and raised hands.
This concept is formed by the combination of two words in Kanji, “kao” (顔 – “face”) and “moji” (文字 – “character”). Therefore, in Japan emoticons are popular as nowhere in the world.
Japanese believe that eyes are the mirror of a human soul.
Anime and manga are vivid examples of how closely the authors manage to convey a variety of emotions just by a set of a few simple lines.
The expression of sympathy or compassion requires at least two Japanese emoticons: one of them will be upset about something, and the other will calm him down.
You can use kaomoji from "sadness" category for the first type.
To show embarrassment, you can use ; character (something like a drop of sweat on a face), or characters for blush (*, o).
In addition, you can try to make your emoticon cover its face by its hands in embarrassment.