The girl could be embarrassed about her strength because it makes her feel different from her peers and she just wants to fit in. Or perhaps it's because she doesn't know how to control or use her strength properly and that causes her anxiety.
It could be that in the manga world she's in, having that kind of strength isn't considered 'normal' and she's worried about being judged. Another reason might be that her strength has caused problems or misunderstandings with others.
It could be that the punishment is too harsh for her and makes her embarrassed. Or she might think others will look down on her because of it.
To draw a manga girl in an embarrassed pose, think about her body language. She might hunch her shoulders, tuck in her chin, and have wide eyes. Also, add some sweat drops for effect.
Maybe she's shy or something happened that made her feel awkward.
It could be that she was caught in an unexpected and awkward situation, like tripping and falling in front of a crowd. Or perhaps she was wearing something that she thought was inappropriate for the outdoors.
The girl in the cartoon might be embarrassed because she was rejected or didn't perform well in a task. Maybe she had a misunderstanding that led to an awkward moment.
An embarrassed girl in a cartoon often has a red face, maybe covers her face with her hands, and has a hesitant or awkward posture. The way she moves and reacts shows that she's feeling self-conscious or awkward in the situation.
Maybe it's to show a particular emotion or situation. Could be for story-telling or to make a point.
An embarrassed girl in a cartoon might have a red face, look down, and maybe fidget with her hands. She might also have wide eyes and a nervous expression.
Well, usually an embarrassed girl in a cartoon shows signs like blushing deeply, fidgeting with her hands, and having a nervous expression. Sometimes, she might even hide her face behind something.
It could be because it taps into common teenage emotions and experiences that people can relate to.