Curved FoldingPaper fold lines don't have to straight.
Try scoring a curved line and see what you can do, they can be a little bit difficult to fold but the results are very beautiful and often unexpected.
These are from the Curved Fold group on Flickr.
Free curved folding template below, good luck!
Here is the free curved folds template pattern to download and create the curved fold design above. Score along the red lines and fold, alternately mountain / valley fold. If you need a great tool for making curved folds, see my blog posts about the ultimate curved folding tool here!