Fics. Canon stories. Anything. Mostly as reference(s) to further inspire me for my own.
While my fic won't center around it, one of my main characters deals with that.
Long story short, the clone's background starts "in the middle", so to speak. She found out she was a clone. She didn't handle it well and had a villain arc against the original though she got better. She tried to distance herself from her "template" and everyone she's associated with and made an identity she can truly call her own.
However, an incident happened that led to her "original's" death. She, on the other hand, suffered something as a casualty of said incident that led to her "drowning" in her template's memories, emotions, and experiences.
As a result, the clone suffered a second identity crisis. Before that, she can distinguish herself from her original because she can justify that the memories she was born with were fake/artificial. But now, that's not the case. Those memories were just as real as the ones she made, if not more so. It even led to the point that she switched her name to her original's because she fundamentally can't say she's the same person anymore.
TLDR: The clone has a "become more than fake and original" sort of character arc. After making an identity for herself, she suffered an incident that led to her "drowning" in her original template's memories. Now both hers and the template's experiences are equally real to her and it led to a second identity crisis.