Combining Fabric Weaves and Weights
Match Ease Treatments to Fabrics
Fabrics of varying weaves may require special treatment to achieve smooth curved seams, as in set-in sleeves or princess seams. Here's a case in point for a princess seam. The side front is cut from a stable vinyl-coated canvas. It won't fit a front piece without easing, and the treatment depends on the fabrics.
If you select a fabric that is not so tightly woven, the front edge can be stretched slightly before stitching to match the longer edge on the side front piece.
To ease a tightly woven microfiber front to the side front, I trimmed the side front at the curve and between the notches before stitching. This reduces the ease, to fit the pieces together smoothly. As long as the trimmed amount is no more than 1⁄4 inch, it should not influence fit much.