I told my sister Janika about this, and showed her the pictures and the tutorial, and straight away we went to try it out. The nail marbling failed, but we had fun.
The surface of the water looked so weird after our experiments.
Here's how Janika's nails turned out.
And here's mine. After cleaning the excess nail varnish on my skin, the left one actually looks quite ok. Practising makes perfect... So I think I have to try this out later again.
Have you ever tried nail marbling? How did it turn out?