I am fond of maps and I decided to draw some World Map Art with nail polish. My technique is to recycle nail polish which is too old to be used on the nails. The process (and my drawing technique of marbling) is very simple: I dilute it with acetone and oil to make it easier to spread on the paper, and add extra glitters if needed. Don’t throw away your old nail polishes, it is toxic for the environment; you can use them to paint cool designs with vibrant colours!