Attach a small "metal book ring" through the hole and then attach a larger ring through that one. This way, the ring is going the same direction as the chart paper or poster and will sit in the groove properly.
Want to nail this fall's latest trend, and look cuteicle while doing it? You've got to try a Half Moon Manicure. Here are some ideas for making it easier to do yourself, and for taking this trend to the next level.