Why are seam finishes important

A seam finish is a treatment that secures and neatens the raw edges of a plain seam to prevent raveling, by sewing over the raw edges or enclosing them in some sort of binding. On mass-produced clothing, the seam allowances of plain seams are usually trimmed and stitched together with an overlock stitch using a serger.

Explanation:

i dont really know what you want to draw but what about a fish? ?

if you are asking for suggestions?