Set the right scene. If it's a rainy day and she's alone in the forest, that gloomy setting can amplify her feelings of sadness and make her crying more believable. Also, the writer can describe how the raindrops mix with her tears, creating a more poignant image.
Using Pikachu's unique electric abilities in the description of its crying can be effective too. For instance, the tears could be described as having a slight electric charge, sparking a bit as they roll down its cheeks. This ties in with Pikachu's nature as an Electric - type Pokémon and makes the crying scene more unique and memorable.
They can describe his physical reactions. For instance, 'Merlin's shoulders shook as he sobbed, his hands covering his face as hot tears streamed through his fingers.' This gives a vivid picture of his crying.
Writers can describe Ryder's physical reactions. For example, they can write about his eyes welling up with tears, his lip trembling, and his voice cracking. This will give the readers a clear image of him crying.
Describing the setting around him can enhance the mood. If he's crying in a desolate place, it can make the reader feel his loneliness more. Or if he's crying in a crowded room but still seems so alone, it creates a powerful contrast.
Writers often use vivid descriptions of the girls' facial expressions. For example, they might write about Blossom's eyes welling up with big, glistening tears, and her lips trembling. They also describe body language, like Bubbles slumping her shoulders and hugging herself when she's crying. Sound effects can be used too, like the soft sobbing noises the girls make.
To depict crying in comics, you could focus on the character's expression. Maybe have them scrunch up their face, tremble their lips, and have big, teary eyes. Also, add some droplets or streaks of tears for a more dramatic effect.
One way is to build up to the crying moment. Show the events leading to it and the character's struggle. And when they cry, describe it vividly - the hiccups, the gasps for breath. Make the reader empathize with the character's pain or joy that brings on the tears.
One way is to use Sonic's speed in a different context. Instead of using it for heroic deeds, he might use it to quickly get between Amy and the person he's jealous of. His facial expressions are also important. A scowl or a furrowed brow when he sees Amy interacting with another can show his jealousy. Additionally, the writer can create situations where Sonic's jealousy builds gradually. For instance, start with him just being a bit annoyed when Amy talks to someone new, and then as the story progresses, his jealousy becomes more intense and starts to affect his relationships with others.
They can describe his physical state. For example, 'Baby Naruto's face was red as he wailed, his tiny fists clenched tightly.' This gives a vivid image of how he looks while crying.
One possible reason could be that she loses a Pokemon battle that she really thought she could win. In the Pokemon world, battles are very important to trainers, and losing one that she had high hopes for might make her cry.