Spring is an opportunity to lighten up with feminine coordinates after months of wearing heavy winter layers. To swiftly add a few seasonal garments to build a sewn wardrobe, here are two coordinate pieces with on-trend appeal. The pieces are a cinch to make and to customize for a variety of looks. Plus, they are made in knit fabrics. Stretch textiles keep comfort in the equation, even when you dress to look your best.

First, I’ll show you how to make a twisted-cowl tank that can easily be made in a rainbow of colors for a wardrobe basic with simple sophistication. It is a great piece to wear under jackets or cardigans in air-conditioned settings.

On the following pages, I’ll show you how to sew a paper-bag-waist skirt in a comfortable knit. The paper-bag silhouette has reappeared on runways as part of the natural-waist and high-waist trend in jeans and bottoms. It is more fashion-forward than a traditional elastic waistband, and it is a wonderful showcase for a sash, chain belt, or buckled belt.

These designs are deliberately simple, for when you have minimal time to sew. However, each has potential for refinements and embellishments.