Depending on the pattern shapes, the best and most accurate way to upsize or down size is to redraw the pattern on graft paper and add seam allowances. Copiers are not always reliable in doing this as angles can turn out to be inaccurate especially if you do this with seam allowances.
The copier will make the seam allowances wider or narrower than needed. You have to do it without seam allowances and then add the 1/4" but still need to carefully measure to make sure the finished size is correct.