Tulips brooch or pin

I need to glue a pin back to the back of this.  There is just a piece of Rose Red cardstock taped to the very back, to cover up the seam binding.

I used my 2-way glue pen to attach the stamped piece to the window pane.  The dots were not nearly as visible once it dried completely...I took the picture too early. 

Stamps:  A Flower for all Seasons

Cardstock:  Whisper White, Rose Red

Ink:  Black

Other:  Beveled Window pane (the largest size), Rose Red seam binding, 2-way glue pen, craft knife, Markers (Crumb Cake, Daffodil Delight, Peach Parfait, Pretty in Pink, Rose Red, Marina Mist, Wild Wasabi)