no obviously you can't do it for someone. but.. you can teach them the techniques, tricks, and ways to develope those skills.
for example.. if you watch a video Poscow or Viruz recorded you will see them bouncing back and forth between their first 2, 3, 4, 5, 6 buildings they build.. clicking on each one as fast as they can and alternating the patterns. to some people it might look like they're just bored clicking shit but that's not why they're doing it. it's getting their brain ready to click at such a high rate and improving accuracy (or in their case keeping their accuracy sharp). kind of like a stretching exercise or warm up before the real game kicks off.
if i never saw them do that i would never think to do it myself. thats a really good little trick to start doing. its just a nice little training exercise for your brain that will make you a faster and more accurate player.
there's all kinds of little stuff that you can teach someone that they never would have thought to do on their own.. but once they know about it they will either remember it during a game, or reflect on a game they lost and think "oh yeah.. i should have done that one thing i saw/heard a couple days ago" .. and then they're more likely to do it the next time a similar situation comes up. and once they do it that first time in game, its not long before they find themselves doing it almost by reflex.