I've been wanting to make one of these for a long time. I finally made my own pattern, and I'm quite happy with how it turned out!!

Supplies:

Pencil
My petal template (see attached file)
Thin cardboard or card stock (a small piece for petal pattern pieces)
Deck of playing cards (makes 4 flowers)
Scissors
Low temp hot glue gun and glue sticks
Hair clip blank or pin back blank
Pom pom, button, or other round embellishment piece for the flower's center. (about 15mm diameter)

Step 1: Make Pattern Pieces

To transfer the pattern:

Print the attached petal pattern.
Trace over the lines of the petal pieces with your pencil darkly.
Flip the pattern page over onto your card stock so that the image is facing down.
hold the pages down tightly so they can't move around.
Using your pencil, scribble over all the lines of the pattern pieces.

Your pattern should now show up on your card stock.

Cut the three pattern pieces out of card stock.

pattern_opt.pdf
Download

Step 2: Trace Petals Onto Cards

Trace the petal pieces onto your cards as shown in the image.

Small petal - trace over the faces of the King, Queen, and Jack (3 petals).
Medium petal - trace near a corner over the number and suit of the 9,8,7,6, and 5 cards (5 petals).
Large petal - trace as close as possible to a corner of King, Queen, Jack, Ace, and 10 Cards (5 petals).

(The small petals will be cut from the same cards as 3 of the large petals.)

Step 3: Cut Out Petals

Cut out all your petal pieces.

Step 4: Fold Tabs and Notch

Fold a small tab on the bottom of each petal, and snip a small notch in the center of the tab (up to the fold line).

Step 5: Shape Petals

Curl the tops of the petals around your finger. They hold their shape easily.

Step 6: Glue Large Petals

Place a small amount of hot glue on the top right side of the 10 card tab. Overlap with the Jack card tab and press together to glue. Continue overlapping and gluing all 5 large petals as shown in the 1st image.

Allow the glue on the last 2 petals to dry, and then pull the end cards together to form a circle as shown in the 2nd image. Glue the tabs of the last 2 cards in place.