I cut all the white pieces first, then stacked them up using a repositional tape runner on the backs.

I stamped the flower, which used to be a wood mount, by Butterfly Kisses, called Sakura,
in Brilliance Pearlescent Blue.

In order to get the effect, you need to make sure some of your images are stamped over all three layers.
I added some random small flourishes in Versafine Majestic Blue.
The blue matting layers were cut next, and each stamped panel added to its corresponding mat.
A useful tip here is to write a letter 'T' lightly at the top on the back of each stamped and matting layer as you separate them. Its very easy to get disorientated when flipping them over to add tape, and it can be awkward to get them layered right, depending on what images you have stamped with.
Before attaching to the card blank, I wrapped some ribbon around the panel. the sentiment is an old Penny Black stamp, and was stamped in Versafine Majestic Blue again, then die cut with a Nestie, Labels 4,small, and a mat layer cut with the next size up (large set). I added it over the ribbon with some small foam pads.
I repeated the design for two more cards, both for Mothers Day.

This one was again stamped in Brilliance Pearlescent Blue, this time I used a brighter blue matting layer. The second card was stamped in Brilliance Pearlescent Lavender, and a different scroll stamp used. The sentiment is die cut on the same Nestie die, just larger sizes.
Supplies:
White card for stamping
Brilliance Pearlescent Blue and Lavender inkpads
Versafine Majestic Blue
Matching cardstock for matting layers
Image stamp- 2 is best
Sentiment
Ribbon
Nestabilities Labels 4, large and small set