One common theme is friendship. They are comrades in the Mass Effect universe, so fanfictions often explore how their friendship develops over different missions. Another theme could be mutual respect. They both have different skills and personalities, and the stories might show how they come to respect each other more deeply.
You can try websites like Archive of Our Own (AO3). It has a vast collection of fanfictions across various fandoms, including Mass Effect which features Female Shepard and James. Another option is Fanfiction.net, though the quality can be a bit more variable there.
There might be a villain who is either a human supremacist trying to eliminate her because of her alien blood, or an alien warlord who wants to use her for his own gain. This villain would constantly be a threat to her and her friends, creating a lot of conflict and drama in the story.
In some fanfictions, Female Shepard's powerful biotic abilities are enhanced by ancient artifacts. These artifacts might be discovered during a side mission, and once she gets hold of them, her biotic powers become so strong that she can even move entire structures with her mind. For instance, she could use her new - found power to collapse a building on top of a horde of enemies, crushing them all.
One great fanfiction idea could be that Female Shepard, as a super soldier, has to face a new and extremely powerful alien race. She uses her enhanced physical and mental abilities, which are a result of the super soldier program, to outwit and outfight them. Maybe she discovers some new powers along the way that are unique to her as a female super soldier.
One possible aspect could be that the story might explore how Female Shepard's unique perspective as a human interacts with the Prothean culture and knowledge. Since the Protheans were an advanced and mysterious race, her speaking with them could open up new storylines about uncovering their secrets, perhaps related to their technology or their downfall.
One great 'Female Shepard and Liara' fanfiction is 'The Bond Beyond Stars'. It beautifully explores their relationship development. It shows how they support each other during tough missions. Another is 'Liara's Discovery'. This one delves into Liara's perspective as she gets closer to Female Shepard. It has some really heart - warming moments between them. And there's also 'Shepard and Liara: A New Chapter' which takes their relationship in an exciting new direction with new challenges and how they overcome them together.
One common theme is her relationships, like her romantic relationships with other characters in the Mass Effect universe such as Garrus or Kaidan. Another theme is her leadership during difficult missions, showing her strength and decision - making skills.
In a fanfiction like this, the story could focus on Female Shepard's struggle to balance her Geth - influenced upbringing with the expectations of the rest of the galaxy. For example, she may face challenges when dealing with the Alliance, which has a history of conflict with the Geth. Her loyalty could be constantly tested as she tries to bridge the gap between two very different worlds.
In many fanfictions, the friendship between Female Shepard and Wrex is quite remarkable. Their bond often starts from mutual respect. Female Shepard respects Wrex's strength and leadership among the Krogan. Wrex, in turn, sees Shepard as a capable and worthy ally. They face numerous challenges together, like dealing with the Genophage issue. Their friendship grows as they exchange views on different species' cultures and values, which helps them better understand each other and work towards a common goal in the complex Mass Effect universe.