I bought these water decals on Amazon ages ago - they cost about £1.50 for a sheet I think, on which there are 20 different sized decals, enough for two full manis.
I used a base of China Glaze Fade into Hue, a pretty pale blue; this is two coats.
I then added the decals. These were slightly less flexible than the decals I've tried previously from the Born Pretty Store, but they were perfectly useable and this mani was done and dusted within about 40 minutes start to finish.
I think they're so pretty! I had to radically cut my nails last night after a huge tear on the corner of my thumb nails on BOTH hands, but the shorter length made the decals a better fit anyway. I suppose I should really have oriented them 90 degrees further round, especially the one on my ring finger, but I didn't, so hey... Next time I will.