I am doing an entry level relief carving in basswood. And I have some questions about preparation and finishing it. I keep reading that sanding is taboo on a relief carving. However it seems that no matter how sharp my tools are, I run into a section where it just doesn't carve clean. Do I sand that to clean it, do I scrape it or just pitch it in the designer wood pile? What is the best and most fool proof way to stain and finish a relief carving?