Hi! we just knocked through and now have an archway from kitchen to dining room. looks good but am now thinking about the decorating and wondered whats the best grade of lining paper to use as the wall has quite uneven surfaces on both sides. I intend to wallpaper both sides. On the dining room side i want to put up a lovely modern paper and have a feature wall. do i line horizontally or can i go vert if i don't start in the same place so that the lines/joins aren't together. hope this makes sense. also, how do i wallpaper the arch to have two sep papers, one on either side. I can see me getting in a tizz re the form and where to separate it. would i be best off using the same pattern both sides? any suggestions welcome. thanks.