Electrolysis clearances will look natural, as long as you don't do something like clear out the entire face to the jawline, and do no work from the jawline down. In that case, who has 30% MORE hair starting on the neck? It would look weird.
Each clearance would reduce the hair by about 20%, so if you wanted to do a controlled reduction, you would do anywhere from one single clearance, to two clearances spread 6 months apart, or three clearances spread four months apart.
Keep in mind, by the time you get to six full clearances equally spaced in the year, you are in the zone that may likely yield full visual clearance of hair that is noticeable when a conversational distance from another person.
If the areas you want cleared is adjoined to another hairy body part, the practitioner needs only fade the hair removal into that untreated hairy part, so that it looks like a natural increase in hair pattern, not a hard line. (unless that part is something like your chest, in which case most people like to get a particular shape done)