At the very start, there is a saw on a tree branch that you can Rev-Roll off while avoiding a vertical death plane to an Angled B-Doing off in the distance. The B-Doing is used as a shortcut later in the level, so by going using the Angled B-Doing you can skip around a quarter of the level.

You can butt bounce on the net slide and get a very fast speed boost. It is very inconsistent however and it doesn't save that much time.

[Saves ~0.3 seconds]

You can rev-roll across the first blue b-doing right before chrome ball skip. You’re forced to butt bounce from the 2nd b-doing to the 3rd since it’s impossible to rev roll across them.

There is a section of the level where you need a chrome ball to proceed. Though instead of going around the tree to get the chrome ball you can instead brute force your way through the section without pushing the button at the end of the section. 

In the tight rope area, there's a rev-roll/ledge grab skip you can do by getting a rev jump on the rope.

[Saves ~0.5s - 1.5s]