Treaty of Versailles

So in class we have been discussing the Treaty of Versailles for quite some time and I really feel like after all of the discussions I have come to my (somewhat) final conclusion, I think that the Treaty of Versailles was very fair to the Allies. The different countries all put what they wanted to see happen in the treaty and so they made it happen. However, they also participated in the war, and they as well started some battles and kept the fighting going. I do not think that it is fair that all of the blame for WWI is being put on Germany. I think that they were a large component to blame because they invaded France and they gave a blank check to Austria-Hungary to do whatever they needed them to do. But Austria-Hungary could have just simply had a friendly talk with Serbia about what they wanted, or they could have just not called anyone in for support and WWI could have simply been a war between Austria-Hungary and Serbia. Overall, the treaty is completely unfair to Germany, they deserve some of the points that were said however, I think that Austria-Hungary should have been blamed and punished for starting the war as well. Because if A-H never had a dispute, than Germany would have never given a check.