The next step was to use Grunge Paste onto both the playing card and the painted A4 cardstock sheet. My Grunge Paste didn't have much left in it and it also needed 'reactivating'. If you find that your paste has gone a little harder (but not rock hard 'set'), you can get it back by adding a little warm water and mixing (or chopping into it with a plastic knife) until it reaches the original consistency. You can always add more, so be sparing when adding water.
It's hard to know which stencil design to use. I like to 'audition' my stencils to see which one seems right. The Scrapcosy PS108 worked well.
I love to add a quote - I do like CS Lewis and this quote fitted perfectly with the stamping I was about to do.
You can see the other finished playing-card project here. It's almost grungy!!