One common theme is friendship. In Skins, the friendships between the characters are complex and dynamic, and fanfiction often explores these relationships further. Another theme is coming - of - age. The characters in Skins are going through a lot of changes and growth, and fanfiction can delve deeper into their personal development. Love and relationships are also popular themes, whether it's romantic love, family relationships, or the relationships between friends.
I think Uncharted Story is good. The way it unfolds keeps you hooked, and the settings and action scenes are well-done. But, of course, it's subjective - different people have different standards for what makes a story good.
First, really understand the characters. Know their personalities, quirks, and backstories from the show. Then, create an interesting plot that could fit within the Skins universe. It could be something that expands on an event in the show or a completely new scenario. Also, use the unique language and style of the show. Skins has a distinct way of speaking, and incorporating that into your fanfiction can make it more engaging.
Definitely not. Skins is purely fictional. The creators came up with the story and characters to engage and entertain the audience, not to retell real events.