A paper rosette with even folds
Even pleats and enough strip length help a paper rosette open into a balanced circle.
Relate strip width to the finished circle
A flat rosette starts as an accordion-folded strip joined into a ring. Bringing one edge of that ring toward the center opens the other edge into a circle. The strip width is roughly the finished radius: a strip 2 inches wide produces a rosette about 4 inches across. Its length must be considerably greater than that diameter to provide enough pleats.
For a first trial, use two strips each 5 by 30 centimeters, approximately 2 by 12 inches. Mark folds every centimeter, roughly ⅜ inch. These dimensions are a starting point for lightweight craft paper. Heavy cardstock is harder to flatten and may need different proportions. Cut straight, parallel long edges, since uneven edges show around the finished circle.
Join two folded strips
Accordion-fold each strip, alternating the direction at every mark. Check that the stacked edges remain aligned as you go. A crooked early fold carries its error through the strip. Correct it promptly rather than repeatedly bending the later folds to compensate.
Join the strips at matching fold faces. The mountain-and-valley sequence must continue through the joint, so overlap the ends without glue first. Remove one fold segment if necessary to maintain that pattern. Join the other ends to close the ring. Let both seams dry before putting them under tension.
Flatten the ring gradually
Stand the pleated ring on a smooth work surface. Guide its upper inner edge toward the center while spreading the outer edge outward. Work around it with both hands instead of flattening one side completely at once. It will initially want to spring back up; that is normal for this construction.
Glue a small paper circle over the center and hold it until the bond can support the shape. Turn the rosette over carefully and add a second circle behind it. Use enough paper adhesive to wet the contact areas without leaving a large blob. A wet mass in the center can soften the paper and take much longer to dry than the surrounding joins.
Correct the cause of an uneven shape
A noticeably stretched section can mean the ring is too short or the pleats are inconsistent. More force will not fix either problem. Open a joint and insert another matching folded section if the ring needs length. A slight unevenness at the rim can be trimmed after drying, but correct larger errors in the folds themselves.
For hanging, trap a lightweight loop behind an additional paper patch on the back. Keep the decoration away from heaters and open flames. Store it flat in a box without heavy objects on top. Note the strip width, fold spacing and total length so that a successful trial can inform your next version, even if you change paper.
