I painted the BK Cracking blue polish over an off white. I was in a rush when I applied it and wasn't as careful with the top coat as normal. Being the first time I used this I hadn't realised that where you miss top coat the polish comes off. I didn't take a photo straight away and so it isn't looking the best, at least I know for the future.
Also the next time I use it I will use a whiter white for the base colour to make the cracks show up more.
I love the look and will definitely be using this again soon and hopefully neater.