First attempt at Water Marbling

As the title says, it was my first attempt at water marbling. After playing around with different polishes, I finally managed to get something that I liked. 

Since I don't have a filter at home, I used mineral water (bottled water) and the following colors:

• Catrice Lucky in Lilac
• Catrice Sweets for my Sweets
• China Glaze Lemon Fizz
• Catrice Sold Out Forever
• China Glaze Moody Blue

The colors in this picture are not very representative. I took this picture at night in artificial lighting.

I applied a coat of a white polish before the marbling. Here's the result:

I still don't know how I can prevent those bubbles from forming. I guess it's a matter of practice.