Okay, guys, I really like this type of nail art. It´s incredibly easy and still so imressive!
So start with base coat to protect your nails. Then use a tape around your nails to protect your fingers from nail polish because later it´s going to be messy. Put water into cup, for exaple, and then drop the nail polishes of your choice into, how many you want. Then with a tooth pick create a design you like and dip finger to the water. Wait few seconds till the nail polish is dry on the top of water and then remove that nail polish from surface of water with tooth pick. Take your finger out of water, remove tape and Voila! You have marble nail!
Hope you enjoyed!