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Diagonal wrinkles radiating from the crotch seam of trousers, indicating that the crotch curve, rise, or crotch length does not match the wearer's body shape.

A band of fabric finishing the end of a sleeve or trouser leg, which may be fitted, folded, or fastened with a button or elastic.

The process of constructing a band or shaped pattern piece that finishes the opening of a sleeve at the wrist, sized to the wrist measurement plus ease for closure.

A finished opening at the sleeve hem, faced or bound with a separate strip, that allows the cuff to open wide enough to fit over the hand.

Wide-legged trousers cut to resemble a skirt, with each leg constructed as a separate panel joined at a center seam.

A facing edge that rolls to the outside instead of staying tucked inside usually means it lacks understitching or the interfacing is too light. Understitch close to the seam and match interfacing weight to the fabric.

Top finish of a curtain that determines how it hangs and gathers, such as pencil pleat, eyelet, or tab top, usually stiffened with heading tape or interfacing.

Fabric layer sewn or attached to the back of curtain fabric to block light, protect against fading, and add body and drape to the finished curtain.

Fabric covering pattern for a cushion pad, closed with a zipper, envelope overlap, or buttons, typically one of the first upholstery-style projects for a beginner.

A manual grading method in which a pattern is sliced along designated lines and spread apart or overlapped by fixed increments to create a larger or smaller size.

The diagram included in pattern instructions showing exactly how to arrange all the pattern pieces on folded or open fabric before cutting.

The outer line marked on a pattern piece indicating exactly where to cut the fabric, positioned beyond the seam line by the width of the seam allowance.

A self-healing, gridded mat that protects work surfaces and guides straight or angled cuts when used together with a rotary cutter.

Pattern pieces that hang crookedly or twist once sewn were likely cut without aligning the grainline to the fabric's lengthwise threads. Measure the grainline arrow from the selvedge at both ends before pinning down.

A large, flat, sturdy work surface, often at standing height, sized for laying out fabric and patterns for cutting.

Multi-size patterns nested together make it easy to accidentally follow a neighboring size's line partway around a piece. Trace or highlight the chosen size clearly before cutting, checking closely at every curve.

An industrial machine with a narrow, tube-shaped bed that allows sewing on cuffs, cylindrical items, and other hard-to-reach curved seams.