What does it mean to play Confident or to play Consistent?
Confident likely to play as much as confident. Consistent, in the direction of constant, so to always perform similarly, i.e. To maintain the level of play.
How can you practice playing constantly? Or test whether you play constantly?
Confident means confident. So you take risks, etc.
Consistent means that you always play equally well.
Are not necessarily the opposite.
Eg If your final placement stagnates strongly / not strongly. If you are always in the top 10, you are playing very consistently, if your final position differs significantly from the previous ones, you are not playing consistently.