Is it through lessons or by transcribing parts or watching video performances? Or a combination of those and other techniques as well.
I guarantee if you studied now with a good instructor you would be amazed by the improvements you would makeI've mostly just listened and or watched and emulated what I see. I've never transcribed something and the lessons I did have in my early days didn't really do much for me.
Everyone works differently though (hence the myriad different revision techniques taught by schools/institutes) - so what works for me may not work for everyone!