My turn to set the challenge again, how the week's fly.
I decided that Acetate had to be used somewhere or somehow.
I used mine as the front of my card, simply scored it and attached to the back of the cardstock, covering join with nice backing paper with fancy border.
Matted glitter card which was embossed with Cuttlebug Happy Birthday folder inside.
Penny Black "Crossing Bridges" stamped on to nestie coloured with Prisma's and another nestie stuck on reverse inside to hide tape and somewhere to write.