When Gravity Falls (rough sketch)

Late post, I haven't posted some of my gravity falls fan art here. But here's the rough sketch version of I'm working last time. And still on going. I just did this when I have nothing else to do, I keep on thinking what will I draw or will I just make my CC fanfic, but both the Writer and Artist blocks attacked me, but at the end of that day, this came up to me. XD So I quickly made the sketch of it. Nex ttime, in case, I'm gonna color this.
My sister has a drawing that also looked like this. lucelenus.deviantart.com/art/Y…