What can a tailor typically alter to improve a garment's fit?

A tailor typically improves a garment's fit by altering its size. This can involve adjusting various components such as the seams, length, or width of a piece of clothing to ensure it conforms better to the wearer's body shape. The fit of a garment is crucial for comfort and aesthetics, and size alterations are the most direct way to achieve a better fit, making a tailored piece look polished and flattering.

On the other hand, while a tailor may have some influence over the fabric type or color through other means (like reworking a garment into another style), these aspects aren't typically changed during the fitting process. Alterations focus on the garment's dimensions rather than its fundamental attributes or overall design.