I'm playing a character who, in canon, has some "cute" moments. It's not quite a defining attribute for her (the way it can be for some characters) but it is part of who she is.

The only thing is, I feel like I'm bad at writing cuteness! How do you make a character cute/endearing? What are some things I could do?

Without going too far in the other direction and reducing her to nothing but Cute Girl or giving anyone diabetes, of course.