For thicker flowers, place two pieces of paper in the middle of a thick book, center your stem on the page, and close with the flower inside. Stand on your book for several seconds to press the flower. Note: you may skip this step for already thin stems and flowers.
Place a few sheets of paper on hard surface or ironing board. Position your stem in the center of the page and layer 2 additional sheets of paper over the top.
Iron your stem on medium-high heat without steam. Apply pressure for a few seconds in each section, and lift to reposition iron. Continue until you've ironed entire stem.
Replace paper with new sheets. Reposition stem if desired. Repeat step #3 until stem is completely dry.
Once dry, carefully lift stem using tweezers and position on mounting paper or linen. Using toothpick, line stem with glue and adhere. Use tweezers to manipulate shape, remove small pieces, etc. while the glue is still wet.
Secure mounting paper or linen to frame backing or cardboard insert using spray adhesive. Put art into frame behind glass and hang according to instructions.