It is important to get things wrong.
To make mistakes.
Because this is how we learn.
When I first started Tai Chi, people would not practise because they couldn't remember the postures and were afraid to get it wrong. Invariably their progress stalled and they soon dropped out.
Instead we should practise and not be afraid to get it wrong. When we then go over the postures or receive a correction/advice/suggestion from a teacher/instructor it is more meaningful and allows us to progress.
Get it wrong to get it right.