I think that show up these flowers after the gorgeous flowers by the talented artist Katinka Matson it's a big daring! But I would like to share with you my experience with scanner.
First you put the flower over the scanner's glass. The flower must be face down. Next you arrange the flower as you like. Then cover the flower gently with a black fabric, very dense, (all the scanner's superficies). Don't shut the scanner's cover, if you do this, you may crumple the flower. Then turn on the scanner. Next you can save the photo in some file you choose.
The interesting in this process is the unexpected: we don't know exactly how the flower will show up. It's like an amazing surprise!