Not too bad for the first time, but I should say that it's hard if you don't have a solid model and it gets extremely harder when you need to select partial vertexes of the whole object and assign it to one of the armatures. if you miss some vertexes, they would get streached rather than being moved with rest of the mesh.
I'm going to cut the model in two pieces from the middle tomorrow and hopefully send it to the 3d printer.
*it's 10:20 pm and i'm still sitting in class and fighting with it! gotta gave up and learn from your mistakes sometimes!