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Answer:

Explanation:

1. Pattern drafting is important because it allows you to create a custom-fitted garment that fits your body shape and size perfectly. It also enables you to create unique designs and styles that are not available in ready-to-wear clothing.

2. To lay-out pattern on fabric, follow these steps:

Prewash and dry your fabric to remove any shrinkage.

Iron your fabric to remove any wrinkles or creases.

Fold your fabric in half with the right sides together.

Pin your pattern pieces to the fabric, making sure to follow the grainline and placement instructions on the pattern.

Cut out your fabric pieces using sharp fabric scissors or a rotary cutter and cutting mat.

When laying out pattern on fabric, it is important to follow the grainline indicated on the pattern. The grainline is the direction of the fabric's threads, and it determines how the fabric will drape and behave when sewn into a garment. It is also important to consider the fabric's print, nap, and any directional motifs or stripes.

3. The fabric grain should be straight before you pin and cut-out a fabric because it affects the way the garment hangs and drapes on the body. Fabric is woven with threads running parallel to each other in the lengthwise (warp) and crosswise (weft) directions. When the fabric is cut on the bias or off-grain, it can stretch and distort the garment's shape, causing it to hang unevenly or pucker at the seams. To avoid this, it is important to ensure that the fabric is aligned with the grainline of the pattern before cutting. This can be achieved by folding the fabric so that the selvedges (finished edges) meet and the threads are parallel to each other, and then smoothing out any wrinkles or twists.