Amnesia Custom Story's: ALIENS/EDWARD SCISSORHANDS?

[4thcoming]

Hello

As a huge fan that has just completed Amnesia:TDD and Justine I would love to make a custom story/mod, two actually, the first being based on the movie Alien (1979) or Aliens (1986) as well as a 2nd CS, based on the movie Edward Scissorhands (1992, I think) the questions I have are:

1. Is this possible making a CS/mod based on these movie franchises?

2. Would it be hard making/importing textures based on these movies and

3. I have never made a custom story or mod, is it difficult to make?

If anyone can answer these questions, thanks.

(Also thanks to Markiplier on youtube for introducing me and millions of others to Amnesia and the great CS/mod The Things in the Night as well as many other great CS/mods, eventually leading me to this very forum here).