Story Level Shortcuts?

Hi all, I'm working on making a LittleBigPlanet 2 speed run :) I was just wondering if anyone knows of any shortcuts or glitches that would help me complete some of the levels faster, even if they only save a little bit of time. For example, I know that you can climb walls with the robobun and that mech dog, which saves some time if used correctly.

Any help would be greatly appreciated :p

Just try to keep momentum, avoid walls, and try to stay at the edges when your about to go down and turning :)