Here is another super easy Simple Blouse variation: a faux peplum. I think a peplum is just fun and flirty.
Trace the front and back pattern pieces on separate paper. Mark a waistline across both pieces. Cut 7-10 slashes stopping a the waistline mark. Spread the slashes open creating as much fullness as you want. You can retrace your pattern after you've spread it out if you want to. I just did the spreading right on the fabric, pinned it, then cut out. That's it! Just stitch it all together.