Resizing shoulder seams

A waistband too loose or tight is altered by taking in or letting out the side seams, adding elastic panels, or moving buttons and hooks. Check the fix doesn't distort the closure or shape.

Blending two adjacent pattern sizes, such as a smaller bust with a larger waist, is done by tracing each size's line at the relevant area and drawing a smooth curve connecting them across the piece.

A jeans hem shortened while keeping the factory-finished edge and topstitching intact is done by folding the excess up inside the leg, then stitching just above the original hem from the right side.

Extending sleeves that fall short requires a deeper hem let down, an added cuff, or a contrasting fabric extension at the wrist. Check there's enough hem allowance before promising extra length.

Adding room to a garment that's too tight relies on unpicking the existing seam and resewing with a narrower allowance, which only works if enough seam allowance remains. Check the seam before promising this alteration.