I mean how much do you want to generalize? Practicing now means doing the same thing over and over, ignoring the adjustments you make? Ignoring the fact that someone who never practiced vs a 10 year practiced will sound different, but she did the same thing for 10 years, it should sound the same if nothing changed. Then the next 10 years will sound the same since they perfected it. But they will practice. So practice sometimes means you change but sometimes means you don't? See how things get complicated when they are overgeneralized.