The WWI is just over, the alliance between Grossdeutchsland, Italy, Hungary and XXX stands victorious, and the XXX-French-Russian Entente lies utterly defeated.
You job as ATL CP diplomat, should you decide to accept it, is to concoct a peace that will be at least as suitably harsh on the French, Russians, and their allies as the current Brest-Litovsk provisional settlement in the East lies, and as alternate history writers will write about the fictional treaties of Versailles, St. Germain, and Trianon, in the improbable case that Germany and Austria-Hungary had lost the Great War, had not the beloved Reichsvater Bismarck succeeded to partition the rotten Hapsburg empire with the Italian and Hungarian allies to the satisfaction of all in 1866-1870.
To make your job a bit more useful, this scenario will be conflated with other fictional ones, so you are also kindly required to provide suitable terms to cover the possibilities of both Britain and the Ottoman Empire being an ally of the Central Powers, neutral, or allied to the treacherous Entente, instead of what really happened.
Likewise, you should suitably provide terms to cover both the eventuality of USA staying neutral or being an ally of the Central Powers, as the possibility of the German government picking a fight with a country that covers the whole North American continent, as it was foreordained to do since they wrestled control of Canada from the British in their war of independence, is just too ludicrous to contemplate.
You are also free to include in your scenarioes whichever other medium countries you deem very likely to have joined these two enemy blocks before or during the Great War.
Projections on the likely effects of the treaties in the following decades will be quite welcome. Nonetheless, we cannot afford to be any lenient to the French, Russians, and their allies.
As the Imperial Chancellor Bethmann-Hollwegg put it "These treacherous French have assaulted the Reich for the third time in a century, and only God can count how many times since the time of the Romans. The Cossack hordes again tried to sweep Europe and shackle it to barbarous tyranny as they did after Napoleon. Even now, chaos and revolution sweep their lands. We must build a peace that will pull the aggressors' teeth for our sons and nephews".