i'd put into my mind that while im playing a match that im actually practicing. that is normally what i do anyways. any shot u hit will show u what u are doing right or wrong. i always try to hit every ball that comes at me reasonably because i could be in that situation in a real match.
on every mistake i make, i try to look at what i did wrong. i get experience for every ball hit out, or to the net because i try to correct what i did wrong.
so just test things out in a real match. i found my forehand that way. it was weird. one day i decided to try something out and it worked and felt good.