Yes, you can now secure the fused pieces to the background. Your choices depend on your machine and your style. You can do basic threadplay to add some texture to the petals. You can do a decorative outline stitch all around the shapes (I like either blanket stitch, zig-zag stitch or a tight satin stitch). Or, you can do a basic straight stitch (sort of like a top stitch) all around the edge of each shape. You can either match the color of thread to the color of the patch - or you can use a contrasting thread across all colors. Just have fun.