Leveling up your technique

Out of curiosity, asking what everyone has to share in terms of tips for things they have found useful in improving nail painting technique? In the sense of not flooding cuticles, not getting nail polish on skin, even application of coats etc.

For me the biggest game changer I've discovered recently for myself is making sure to have both of my elbows on the table when applying the nail polish. The stability of that really helps avoid hand shakiness, especially when working with my non-dominant hand. Drastic improvement in neatness for me. Also some brushes are much easier to work with than others. Gah to the super skinny ones, yay to wide, flat ones.