I have done a similar manicure a while back using black flora tip water decals. This whole thing from base come to top coat only took me around 20 mins and it is what I love most about them. I can create a sophisticated design effortlessly in a short amount of time.
Although I must say I am not a huge fan of the color combination of the flowers. It kinda reminds me of the clothing women wear in old time Shanghai movies......... but I wouldn't call it a bad design either.