My only suggestion is that if you double the size of the block, including the appliqué cherries, you may need to change both the stems and how the cherries are sewn on. For the stems, instead of using a stem stitch, I would appliqué on narrow bias stems. The stem stitch is likely too narrow to visually support the larger cherries and leaves. For the cherries, I would use a blanket stitch around the edges in addition to (or instead of) the centered star stitch.
It’s a lovely block and should make a great medallion.