Here is a quick neon polish tip. I like to apply a coat or 2 of white polish underneath neon nail polishes to make them brighter and more opaque. Often I find neon polishes watery and thin so you need to apply a few coats but applying white underneath makes it so you need apply less coats. Plus it makes the neon polish appear brighter!
The nail on the left has 1 coat of white polish followed by 1 coat of Essie's Knockout Pout whereas the nail on the right only has 2 coats of Knockout Pout.