Here's something I thought would be fun to try. Denim pocket water decals over a denim polish.
My plan was to use Picture Polish Denim for this as it's the perfect denim, but when I started to use it, I found it had gone a bit thick and goopy. I was too lazy to get out the polish thinner so I grabbed Essie Smooth Sailing instead. They look very similar. Picture Polish Denim has a touch of purple tone to it, is a little more opaque and has more visible flecks and shimmer. Essie Smooth Sailing is blander, smoother looking. The flecks are still there, just not as big. This is 2 coats of Smooth Sailing.
The larger particles in Denim would have made this much more visually interesting. After a few days I'd had enough of the smooth blue background, and it was chipping and lifting around the edges :( That always happens when I take the lazy option, I regret it. I should have taken the time to use the polish I really wanted.
The water decals were easy to use but not as flexible as I expected. Though I only have my own home printed ones to compare them too and the ones I print are very thin. Still they went on well. I actually liked the design on my thumbs best but didn't get any photos of them.
BTW I found a way to do a good denim texture but only after the fact. Paint your nails and then when the polish is at the almost-dry-but-still-a-bit-tacky stage, press it with your fingers, over and over at different angles. The effect of cross hatching your finger prints makes for a pretty natural looking denim texture that is still visible with a top coat but smooth to the touch.