I do most of my scrapbooking in Artisan too and played with this challenge for a bit this morning. I used a similar technique to GennieJoy (GennieJoy- the smudge tool was a brilliant idea!), but did some things differently so I thought I'd share. I think my technique is slightly more complicated, but gives you more control.
I used the wand to extract the flower (the other day) and copied it so I had two. I smudged the bottom one (with the largest smudge and the largest brush size) and then saved it as a jpeg, imported it to my photos panel, and then hid it on the main page. I used the erase brush to erase the edges of my original flower and then brought in a few splatters and filled them with the smudged flower from the photo panel.
The end result, without turning it into a page or spending much time on it was this:
View attachment 252441
I hope this helps, feel free to message me if you need help fellow artisan users!