Well ideally I'd make Versailles the surrendur of the Entente and not the Central Powers, but going along with the OP's request I'll try to make it more or less realistic for an Entente victory. I'll also only make it about Germany as I have alot to say about the entire Paris Peace Conferance in general about Eastern Europe that I'll not share.
-The only reparations would be minor to repair damage done to French and Belgian territory and they would be paid after 1925.
-The treaty would return A-L to France.
-Czechoslovakia, Romania, and Yugoslavia will Trianon Hungary.
-Austria would be an independent state that could only join Germany after a plesbicite in 1925.
-Danzig would go to Germany.
-Germany's borders with Poland would be as IOTL with the exception of Danzig, however Poland must allow free transport from Germany to East Prussia for non-military purposes.
-Austria, and Czechoslovakia may not place trade restrictions on eachother until 1925.
-The German Army must not, until 1945, exceed 500,000, excluding the period until 1925 with the option to increase that year by approval of the 2 of the 3 Entente powers: U.S, France, and Britain. The same restrictions apply to Austria.
This falls out of the Versailles treaty but my ideas are predicated on this element so I must include it.
-A combined military operation including the armed forces of all former belligerent and willing former neutral European Nations excluding Turkey, and Hungary, Japan, and the United States are to assemble their armed forces to liberate Eastern Europe and Russia from Soviet aggression. Restoring the Governments of the Belarussian People's Republic, the (Western and Eastern) Ukrainian People's Republic, and ensuring the continued independence of the Baltic States and Finland.
It's a bit idealistic but it woud have been the right thing to do.