1. be innovative, go beyond what is expected
we need to push the envelope on this project/presentation
To 'push the envelope' means to go beyond what is expected or what is the norm, to extend beyond the limits. "We need to push the envelope if we want to come up with an innovative solution." "This launch needs to push the envelope of anything we have done to date." This idiom is considered a bit of a cliché to some due to overuse. When you push the envelope you aim to impress or achieve more than is expected.
There are a lot of clients present tonight, so we really need to push the envelope and exceed all of their expectations.
Stephanie has worked very hard this year, so I'm going to push the envelope and give her a generous bonus.