The one on the left is my personal favourite, it is felt flowers just cut out and then stitched onto the cushion with embroidery floss and running stitch. The other is the first one I did, with lovely turquoise beads sewn on and then stitching around them. Here are a couple of close-ups:
The first cushion has an interesting overlap on its back, where my spatial awareness failed me when trying to sew layered overlapping things together inside out. The second time, I pinned the first seam while the cushion was the right way out, so I could be sure which way it would end up!