I totally copied this look from here - I couldn't resist, it's too fun. I went for the traditional blue base colour but I reckon this look could work with any background. I have seen it online in yellow which worked quite well. I used nail art pens in black and white from Topshop to create the little plane. I did the white bit first and then outlined in black.
Had to take a snap with my new favourite rings from H&M. Totally going to be rocking this look in the Summer.
Couldn't help having a go at making some actual paper planes too. They flew for ages! Templates downloaded here.