That part is not really important but please be very careful with black magic, most people who want to use it are not ready for it by a long shot.
If you want justice it's better to invite divine justice rather than doing black magic on someone.
A safer option is binding, where you can bind someone from doing something, for example if somebody means danger for you, or halting your advancement, it is appropriate to bind them from doing this, but usually vibrating vinasa on someone is not justified, and you can fuck yourself up with this.
For once, if it really is not justified, this invites negative karma for you, and if you can control the energy, you are not pure, and strong enough, it can manifest easily on yourself instead.
Rather, doing the appropriate God ritual for this, like Andras's ritual, and if needed, binding are better options.