Ok so the first mist coat I did on newly plastered but dry ceilingI got the ratio the wrong way round (yes it was messy!). Used the remaining original mist to water down rest of paint. I think if I'm lucky the 2nd mist coat was 70 paint to 30 water. Is there a way to check if this will start to peel? Is there anything I can do to ensure it won't peel/crack with topcoats? Sickened off with myself as I have done plenty of painting so should not make a rookie error!