Hello! I would like to get some advise from the pros here

Often when I create a style, the overall sounds lacked balance and 'completeness'. When compared to the presets, my styles sounded like all instruments are fighting for space to be heard or seems to be playing in one straight line in front of me

The keyboard preset styles have instruments playing 'far' away or 'near', on the left or right side. All the instruments in the style seemed to have their own 'space' and sounded balanced and complete.

After much reading and going through the keyboard's preset style's settings, the balance and completeness effects were created by mixing the Volume levels and Panning position of each instruments for a style.

How do you decide on the volume levels and panning position for each instruments when creating styles?