The Fashionista tutorial is alright but the Northern Lights topcoat will not give you nearly as much holo as the Chanel polish unless you used about 5-10 layers. It is very pretty over Essie Loophole, though. Loophole is definitely good for a silver polish -- it looks like gorgeous liquid metal and actually a lot like the Chanel duo silver. Get the Essie -- it's only $3.19 at Head2ToeBeauty