How to write about the change of impression on a boy who has a crush?

The impression of secretly loving a boy has changed. You can write it like this.

1, the first impression is generally a partial feeling of him, such as his five senses, his fingers, the small details of the clothes he wears and so on.

2, from the partial development to the overall evaluation of his overall feelings, is sunshine, generous or capable, exquisite and handsome, and so on.