any tips to make the timing easy?

Ive been speedrunning 0-1 and i cannot for the life of me clip under the exit door, any tips to make it easier to do?

will do!

Explain?

i watched some guy who got 11.926 and he did the sharp under the maurice and i tried that and i got a new record, 12.506

Im rubbish at doing the exit trigger bit when doing 0-1 and a friend told me to do it on violent and use the sharpshooter to instakill maurice. Ive only been able to do it once and cannot do it again, any tips to be able to do it easily?