Because I’ve got my heart set on making the blouse version first, I’ve scoured the internet for nice peplum blouses to combine into one perfect one! Here’s a selection. Perhaps you’ll feel inspired too! (And by “scouring the internet” I mean typing “peplum blouse” into the Pinterest search bar.)
Right now, I’m thinking of doing lace on the yoke and sleeves, and probably making the whole thing mustard coloured. Or perhaps I’ll go for dots, or something else, or whatever I find on the market Saturday!

Mixing transparent and opaque fabrics?
From Honey mi Honey, but I couldn’t find it on their website anymore.
Oooohh! I love the mustard lace one! :)