Is there anyway to build faster in minecraft pe?

So in my mcpe I'm building a mall. But I want to make it as realistic as possible,… So I have to make it HUGE. But since the walls are huge it's gonna take me a long time to finish it. So I was wondering if there was a way, without being jailbroken, to build quickly?

Not really, only tricks to help it go quicker like flying up and placing blocks bellow you etc.