User blog:Spartian300/New althistory book A little help?

I am currently working on an althistory story, and need some help. It is set in the year 1920, and goes all the way to 1945, and is intended as a Alternate world war 2. However, the POD is much earlier, with a French victory at Trafalgar. I may make some prequals, but first, I want to work on this. The story is called "The Lights are going out", and focuses on inter-war peroid, and WW2. Here is a preview:

Jenne Javert walked drunkenly down the streets of Paris. He glanced up at a poster on the ruins of a bombed out house. It showed Napoleon Bonaparte raising his saber in salute to Andrew Jackson after the battle of Havanna, with his men standing behind him. Their heads were bowed in shame at the defeat they had suffered, and many were wounded in hidoues ways. The words written beneath it qouted Napoleon's famous remark after the battle: " It had been a good fight, but now, it is over." He scuffed at the picture. It obvisously was meant to show France's shame at the defeat it had suffered in the war, the Great War, as everyone called it. He snarled. All those Frenchmen, proud of their country... Gone. "It was not our fault," he growled. " We were stabbed in the back." Notre Dame cathdrieal came up in front of him. He stared at it coldly. "Stabbed in the back..."

So, you can guess the plot, but I want some help as to how this will work out. I will list the nations that are in this timeline later. In the mean time, feel free to give me soem ideas.