If you’ve ever hung your own wallpaper, you’ll know that no corner is ever perfect. Here’s how to solve that problem. Split your corner piece lengthwise into two parts. The first half should turn the corner by a quarter inch. After you’ve hung your first piece, smooth out the bubbles and trim it. Then overlap it with the second piece, carefully matching the pattern in the corner. This way, you’ll have a perfectly plumb edge to match with your next full piece of wallpaper.
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