This is my first time using Studio to generate instructions. I didn't just simply increase the width of the chassis and roof to achieve a width of 10 studs; I also redesigned the doors between the carriages, using part number 4181, which is a 4-stud wide door. Similarly, I widened and improved the walls inside the carriages to ensure there are no flaws. In a few days, I plan to continue improving the compartments inside the carriages to make them into truly separate rooms, while also leaving a 2-stud wide corridor, just like the real Orient Express.
This is also my first time posting in this forum. Why does this forum restrict me to only posting extremely small images? I had to compress them multiple times before I could successfully post. Where should I upload the instruction manual and .io files?