Wow this is late, but when using polymer clay you must bake it so that it can get hard. If you don't gonna stay mushy for a long time and then it crumbles 
Sanding helps smoothing things out and it actaully makes the finished product a lot better. Makes it smooth and once varnished, even better looking!
Sanding helps smoothing things out and it actaully makes the finished product a lot better. Makes it smooth and once varnished, even better looking!