These two cards use that lovely big floral stamp from Crafty Individuals CI-443 Floral Festival XL:
You can use it to make a background or, as I've done here cut out the flowers to make them the focal point.
I've worked on a kraft card background that's been coloured with Distress Oxides:
In this background you can see I've stencilled first in gesso using one of the new masks - a leaf
Thanks for looking!