This clip works the same as other diagonal teleports, like Death Mountain Ascent .
The vertical starting position can be easily achieve with just bonking on the left tree. Don't go too far right as the edge will stop your bonk. After that, justmultiple times until you reach this position.
As a visual cue, you can use the dark brown pixel under Link left arm. As always, release the charge and press. but don't hold it for too long.
You will be in the middle of the cliff. Press(or ) to fall on the south screen.
Once you are on the next screen, fall with right to reach the right screen.
Then just hold.