Happy Halloween! Yesterday I finally put the finishing touches to a piece that's been sitting on my work table for a few weeks. If you're eagle-eyed, you may even have seen it in the background of some our earlier autumn / Halloween photos. During that time I've added bits to it, changed my mind and took them off again, added new bits, moved them around, but now it's finished. Or is it? Most of the pieces are stuck and final, but I've made it partly 'modular'; the cookie tree and the pile of…