Step 1: Define refinement
To some, it's just getting better execution, but I think it's better to look at refinement as: approaching the idealism of your execution personal philosophy.
step 2: wtf am I on about
To me, execution is a cross of 2 things: mechanical ability and a personal philosophy.
Sure, I can execute a trick in multiple different ways to emulate different spinners, but, for my own spinning, there is some amalgamation of aspects from other spinners execution that I want mine to look like.
Basically; my this should look like that.
My trick should look like the idyllic form I picture in my mind.
step 3: Weak, average, and strong philosophy
- criswea 1p1h; He completes tricks to complete them. he lacks strong goals for visuals, and the tricks are mechanically simple to the point that they don't provide much additional flair on their own. If you copied a criswea 1p1h combo, execution and all, nobody would know.
- tilt; He has goals, but they're very basic, and likely a byproduct of his trick pool. His goals aren't "make this beautiful", but instead "make it not bad" or "have less mistakes". He really lets the mechanics of the tricks speak for themselves. If you copied a tilt combo, execution and all, people would only know because of the trick set.
- nine; He'll completely change the way a trick is executed to fit his vision for a single moment in a combo, but you can always look at his spinning and say "that's nine". He has an established identity, and if you copied his combo, execution and all, people would know because of the tricks he's chosen and especially how he worked his execution around them.
step 4: Simplify this entire block of text
Simply put it's goal setting.
You ask yourself "what is beauty?", come up with an answer, and then you work towards it.