I'm a DATY master. I'm one of the best ever to do it. Hell, even some of the girls who have been lukewarm (or worse) to the idea of DATY changed their tunes once I went to work. Quite a few women on here can attest to that.
Reading reactions, changing it up when necessary, is vital to the game. Every woman is different in this regard. Some women are more take-charge and tell you exactly what to do. That's pretty simple. Other women are completely silent throughout, which makes it difficult to know if you're hitting it right, so you have to rely on body movements. Still fun. But my favorites are the ones who are more vocal in their pleasure. The vocals getting quicker/raspier as I'm putting in work are music to my ears.
If you want bad DATY, take a look at 90% of straight AND lesbian porn. I cringe when I see they way they just dart all around the pussy and do all types of weird shit.