The best option seemed to be the shrink plastic but I didn't know how to use it on a page. But luckily, I have two 3km journeys to/back from work a day to let my mind wander... Walking can be so inspiring...
When in doubt, do what you know the best. I decided to return to one of my trusted techniques. (Find more about this technique here.)
First, I created outlines using a 3D Lack by Nerchau.
While this was drying, I stamped the shrink plastic with some of my circular stamps.
I cut out the shapes and shrank them.
[I think I should revise the English irregular verbs... shrink-shrank-shrunk... geez...]
When the outlines dried, I covered the page with gesso.
I used kitchen sponge to apply the acrylic paint.
Then I added the shrunk elements.
Finally, I highlighted the raised areas with white outline paint.
I also added some miniature clay heads.
P.S. I reallly love the "I don't feel like working today" stamp :-D