Start with the food you already eat. Red radish on dosa gives heat and crunch. Fenugreek on upma tastes like young methi. Sunflower adds bite to curd rice without changing the dish. Basil works on tomato rice. Mustard is strong, so use less.
Do not cook microgreens for long. Heat dulls the texture. Add them after plating, like coriander, but with more structure. Wash, pat dry, scatter, eat.
If you are serving guests, use colour as a guide: pink radish for curd rice, sunflower for sandwiches, red amaranth for a thali, wheatgrass for juice.