My thought process of creating my story idea

I began my process by thinking of a character. This character came from me wanting to use a sniper gunner in  my film. Therefore I though of the main character being male and a sniper. Therefore I relised that a sniper needs to have a spotter. This spotter would be the second characater.
As my story was created, I came up with the idea of adding a group of terrorist whom would be assinated. This idea continued with a twist at the end of the film with the terrorist becoming Zombies.

After establishing this original Idea I established that I wouldn't be able to find a suitable location for the story line. e.g. A desert land. This led me to changing my idea even further, by changing the people whom would be assinated from terrorists to samalia pirots. This idea came to me from thinking of locations which would look like a desert but isn't. e.g. A beach setting. Samailia pirates would be far more apropriate at a beach. And a beach would be more feasable in terms of getting actors etc. there. However, I relised that I may want to go back to the filming location to do some more filming, which would therefore be rather complex.

So I continued to adapt and change my story idea. I thought, perhaps the use of a family location would be far more relatable. Furthermore, as the use of