I played a lot of baseball growing up. Admittedly, I wasn't nearly as good as my brothers, and none of us could hold a candle to our dad.
In Tsukahara Bokuden's The Hundred Rules of War we read that "Identifying a bad sword by the sound and vibration it gives off when cutting is something that a Samurai must learn to do."
In the fight game, you know when you've landed a good technique. It feels different; sweet even. There's a different sound to landing a solid punch compared to one that's just a little "off".
And oh the sounds of the fight game! The wheezing of your opponent when you knock the wind out of them. The deep thud from a solid leg kick. Music to a sensei's ears!
Learning the difference between the sound and feel of solid technique comes after many repetitions. It takes a lot of practice and effort. In today's culture of wanting immediate success, learning the sensations of great technique requires the one thing we least desire to offer: time. It's a sacrifice, but oh so worthwhile!
Ever watch a baseball game and noticed how a batter seems to know when they've hit a homerun the moment the bat meets the ball? That comes from practice folks. Get to the dojo, and train.