There are many things an artist can do to express their individuality. Serious origami artists often compete in competitions. Here is a place, a competition, where people showcase origami that expresses individuality. This is an opportunity to compare their work with other artists. It's also a great place to get new ideas that can later be used to create individual pieces. Both of these skills are needed in order to make origami, especially advanced origami a success. The individual needs to be able to look beyond the current step and know what should come next. They need to be capable of forecasting the outcome of each step of the origami process. If a mistake is made or a step is skipped, it is quite helpful if the person can figure out where they went wrong. This is a great hobby for children to be involved it. It helps them develop reading and writing skills, teaches them about sequencing, as well as teaching them to concentrate, be patient, be attentive and use their imagination. Because children tend to change their minds quite often, choosing origami as a hobby is a smart choice since it is relatively inexpensive. Also since every folder has a slightly different touch and technique an artistic origamist's piece would be almost impossible to duplicate. Many of the Origami models back in the Edo era were made possible only due to the use of Washi. Washi is a very strong Japanese paper, which unlike the western papers didn't tear easily when being folded. Issey Miyake is a fashion designer who's unique style merged eastern fashion with western by incorporating the concepts of origami into his creations. In 1993 he designed two clothing lines, one called "Pleats Please" and the other "A POC" (A Piece of Cloth). Pleats Please was a clothing style that allowed for unrestricted movement without the fabric losing its shape. Teachers around the world have used origami to teach different concepts in chemistry, physics and architecture as well as math. Origami construction is defined as the folding of paper using the raw edges, points of the paper and any creases or points subsequently created by those folds. The folded paper is seen as both an art piece and a geometric form.