Avoid wet areas. Design your planting to get the most effect, like grouping bulbs together, or planting them en masse. Consider height and time of bloom. There generally are early, mid and late bloomers. Plant some of each so a continuous color array keeps your yard exciting through the late Spring and Summer.
Selection is important, too.
The larger the bulb the larger the flower. Bigger is not always better but you can accent parts of your yard by using large bulbs in those areas. Loosen the soil below where the bulb will sit and either work in some composted manure or sprinkle a little bulb fertilizer or bone meal in the hole. Plant pointed end up.