What should be done to the bottom corners of a square or rectangular pocket to create sharp right angles?

Creating sharp right angles at the bottom corners of a square or rectangular pocket can be effectively achieved through the mitered technique. This method involves trimming the corners at a 45-degree angle, which allows the fabric to lay flat and form a crisp, defined edge when the pocket is turned right side out. Mitering provides a clean, professional look that enhances the overall quality of the sewing project.

Clipping, on the other hand, typically applies to curves or rounded edges to help the fabric curve smoothly without pulling or puckering, and it is less suited for achieving sharp corners. Neatening generally refers to finishing raw edges to prevent fraying but does not address the formation of corners. Folding can assist in shaping a pocket but does not specifically target the creation of sharp corners as effectively as mitering does. Therefore, mitering is the preferred technique for this purpose.