First piece of advice: Practice vine clip somewhere else, get the technique down. Make sure you're doing it right.
Secondly if you're using nuts, try and count the twitches if you can. I couldn't tell you how many since I just try and time it, and hope that I get it lol
Third, if you're doing the no-nuts method, I do recommend buffering it. Watch
Jiano's and
Cosmo's video on it, learn the timing. It helps
After that if it's your preferred method you can learn it without buffering, which there's no real tips for that other than trying to apply it without buffering
