Here is a tute on how to make a folded rosebud.
Attach the rosebud to the background fabric inside of the calyx placement
drawn a circle on fabric, in our case I drew a 3" circle
cut out on drawn line
fold circle in half
fold in one side to middle, align lower edge
fold in other side, overlapping a bit
close to lower edge, take a couple of tacking stitches.
Tack the rosebud down along the bottom and inside of the folds of the bud, opening up the folds to hide the stitches
place calyx over folded rose & stitch in place, tucking the fabric around the rosebud.