Maybe I'm just a goofy little self-love advocate who thinks too much, but the idea of the "You Have to Kill Your Evil Clone" trope being used as a metaphor for self-image makes me insane. That's literally You. You are looking at your own face and you assign malice and evil to your reflection. You see yourself outside of the mirror for the first time and your instinct is to kill them. What does that say about how you think of yourself.
If I had a clone that could potentially be evil and plotting to replace me, I would not destroy her to prevent that turn of events. I would make two servings of my lunch to share with her and ask if she's eaten yet. I would listen to her go on rambling tangents about obscure media from our childhood and rediscover my love for the characters she raves about. I would make eye contact with her from across the room when something upsetting is said, and she'd give me That Look to let me know she was bothered by it too.
Maybe she'd want to replace me at first, and maybe she'd even consider how she could do it a few times. But I spent years of my life clawing my way out of self-loathing, and so did she— and I think we'd both like to have a chance to say how proud we are of each other for it. "Thank you for not hating yourself. Thank you for not hating me. I love you, I love you, I love you."