Remove any dirt from herbs. Remove from stems, then mince leaves. (Compost stems!)
Put lemon juice in a medium bowl. Whisk in olive oil in a slow stream. Alternately, you can shake all dressing ingredients together in a jar with a tight fitting lid.
Add salt and pepper to taste. If your dressing is too acidic, try adding a pinch of sugar.
Just before serving, toss dressing with greens and any add-ins you like.