Shoulder seams may need stabilizing. Growth features such as adjustable straps. Washable if not a special occasion garment. Fabric should be suitable for the articles, drape if required, sturdy for function, and match or blend together. Appropriate finishing such as stuffing in the pillow, curtain rods, ties.
Window treatments require appropriate fullness for size of window.
All or a reasonable amount of sewing to be done on a serger or overlock machine. Threads connect or lock at the seam line and do not come undone. Threads connect or lock at the edge of the fabric. Needle thread matches fabric color - other threads blend in color if not a match. Roll hem requires a loosened upper looper and a tightened lower looper so that the edge rolls under.