If you don’t already know, white has a tendency to lower the vibrancy of hues. Most amateur artists use it to lighten colors, but it can create an overall deadening effect because it can suck the life out of your painting. Three tips:
– Titanium white is cool in hue and dominates colors.
– Zinc white (mixing white) holds colors more, but has a lower tinting strength.
– Experiment mixing your colors with lighter non-white hues to see if they will give the effect you want without the side effects of white.
Just know that white will always be one of your most used paints, regardless of your techniques.