You know how they always tell you to space the bulbs 4-5" apart. Well, space them half of that distance and in put them in a circular arrangement. So when the daffs and tulips bloom, they will look like a small clump. You can space the clumps like a foot or 2 apart depending on the effect that you want to achieve. Have you ever bought tulips or daffs in pots in the spring? They plant the bulbs even closer than 2". The pots look really nice. Well they will look crowded in a few years but by that time you will have some other designing ideas that you will have to dig up the bulbs anyway. Some tulips don't even come back your bed will be constantly changing over the years.
Here is planting in clumps look like
This is what row planting looks like. As you can see there are peonies in the back of the daffs and they are just starting to form buds.
