I think another bit of advice I'd suggest is avoid
jargon as much as possible in RP'd PVP, or else be willing to pause and explain (perhaps parenthetically) what unique terms mean.
For instance, I know a thing or two about fencing, so if i want to throw in bit of fencing terminology to add flavor to the RP, I should be ready and willing to explain what those terms mean, and what the implications of the move might be.
For example (assuming that the trainingdummy mentioned below is holding a mockup of a weapon):
* Timil Deeps aims his saber at the trainingdummy's torso in quadrant 6, and initiates a beat-coupe'-lunge.
Someone who has taken fencing should know that Timil aimed at the dummy's chest, near its shoulder, on whatever side the dummy was holding its weapon, and that Timil tapped the dummy's weapon with his sword, brought his sword quickly up and over the opposing blade, and then used his rear leg to propel himself forward order to strike the dummy's chest. However, I'm guessing most people would struggle to understand what action was described by all that
jargon i used.
The nice thing is that once a bit of jargon is explained to someone, you can use it with that person as shorthand in place of the lengthy, detailed description of the action. (For the moment, I won't address the problems my example poses in terms of tempo/timing, right-of-way, and the fact that it is in fact a compound action that might require finding out how an opponent will react at each step of the process!)
So yes, it can be a dilemma: use jargon and risk having people not understand what you're describing, or invest in the time (and possible tedium) of deciding the level of detail you wish/need to use (I prefer sufficient rather than exhaustive), and then typing everything out...
But with patience and grace, the end result may not just be one Good RP, but future Great RPs!
Just my further $0.02 + tax & tip.
~Timil~