about 15 years ago I papered a room with a flowery paper. The room is now used by my 9 year old son who is not thrilled by the flowers. I wallpapered a lot of my house in those days and the idea of wallpapering is not intimidating but the idea of stripping the paper off does. My kid has already pealed of some, (not the backing) out of disgust. One of the wall was in tough shape last time and I had to do a lot of plastering and sanding to make it useable. Do I have to strip the paper? Its not embossed, flat surface, not coming off anywhere except where my son has peeled it. Can I paper over? I am somewhat afraid of messing up that difficult wall and having to plaster and sand again.