Every part of the the writing process has different challenges. Some come to me more naturally than others. Editing for example takes me a long time, but comes to me more easily than writing a first draft.
For me, the hardest part is coming up with the plot line, and I don’t mean just the initial idea, but the complete description/action in the book. If I take the example of When Colour Became Grey then the initial idea is described in the blurb. That’s the overall direction of travel, but what happens on those 300 pages needs to be much more precise and make sense. You can’t make something happen that wouldn’t fit the character’s personality or come up with “easy solutions” or over-dramatization (I’m thinking here of a particular action movie where the main character almost dies 7 times but somehow is always saved in the last second. After the third time I couldn’t take it seriously anymore). As the author you can write exactly what you want, but readers need to accept where you’re taking them and it needs to be somewhat plausible.
To me writing is like creating an intricate tapestry. You start off with just the overall idea and you add in layers of color, pattern, use different material to give the story a different feel as you move on. The reader only sees a small portion of the threads, as if they’re going over the tapestry with a magnifying glass. But as they read on, more and more of the tapestry is revealed until they see the whole piece, and ideally you write in a way that the reader understands “insiders” from earlier in the story that they only discover once they’ve finished the story.
Initially when writing a detailed plot line, I write what the story is about looking at it solely from the main character’s perspective. Then I think about the role of the secondary characters and how they interact with the plot line of the main character (so I’m still looking at it with a view on how it will influence the main character only); are they always helping the plot advance and how do they advance the plot line, or do they interfere and force the plot line of the main character to change? After this, I question whether it makes sense for the secondary characters to act the way I’ve described it; does it fit with their personality?
I leave room for spontaneity and for the story to take control over me; just like I’ve written in my post on how to bring characters to life I let my imagination take over and take me where it wants to go. It often leads to great ideas and scenes.