For example, if she’s clearly very eager to share something she’s done with other people, that’s something you could compliment her on.
For example, if she complains that she hates her nose, tell her that you think it’s cute. Another example would be if she clearly tries to work very hard in school, compliment her either on her work ethic, her determination, or her intelligence. For this type of compliment, whatever you compliment her on has to be honest. Don’t say something you don’t mean just to find something to compliment her on. [2] X Research source
It is important to consider whether or not she actually possesses the quality you want to compliment her on. Telling her she’s good at something that she’s not will catch her notice and she’ll know you don’t mean it.
Importantly, it is also something that can’t be taken away from her or that can change with time. This means that she won’t have to fear losing this quality, and can be happy when she thinks about this compliment for the rest of her life.
For example, don’t compliment her on her physical appearance after she’s just given a presentation (unless it’s to say that she looked fierce and was commanding the whole room). Instead compliment her on her hard work, her great way of phrasing the information, or her clear intelligence shown in how she put the presentation together. Complimenting her physical appearance in this situation would be demeaning, but complimenting her work is empowering.
For example, if she’s just worked very hard on something, you can compliment her hard work by treating her to a relaxing back massage. Another example would be that if she does something really nice for someone, do something really nice for her, like making her dinner. These actions can also be ways to introduce a spoken compliment, by telling her why you’re doing what you’re doing.
This is most common when complimenting girls you don’t know. Girls you do know will probably modestly reject a compliment because they are frequently conditioned to do so, at which point you can simply emphasize that you really mean it or think it, or just straight-up tell her not to be so modest.
Complimenting on physical features works even better if you tie the compliment to her personality or actions. For example, tell her that her eyes are beautiful and that you love how her determination shines through her eyes when she’s working so hard.
For example, telling her she fills out that shirt nicely. Sexualized compliments generally only work with girls you are dating or have another very close relationship with.
If there’s anything in your compliment about her losing weight, stop. This can easily be taken the wrong way. Instead, compliment her by telling her how healthy she looks, tell her that she’s just glowing, etc. Don’t compare her to your sister or mother in any way, unless there is a circumstance where this would be a very good thing. Generally if you want to have a romantic relationship with her, it’s not. Any comments that end in “today” (ex. “You look so nice today”). She may believe that you’re saying she doesn’t look good on any other day. Ouch!