3. Play for family and friends when you have mastered a piece.
4. Practice with no interruptions or background noise. You will concentrate better.
5. Listen to yourself, don't just play the notes.
6. Use your playing for relaxation. Don't try to play when stressed.
7. Take your instrument on vacation to a lake, forest, desert, mountain . . . . and play. You'll be surprised at how good they sound outdoors. If you have a decent wood recorder, get a cheap plastic one to take with you.
8. Don't play your instrument while taking a bath, shower or swimming.
9. Don't practice at 4 AM in an apartment building.
10. Bathroom acoustics are excellent. Ever notice how good singing in the shower can sound? Play in the bathroom (but NOT while showering). Remember to sit erect and not slouch for good tone.