#1: A little overexposed, and the angle/distance from subject make it a bit hard to figure out what the subject is supposed to be.
#2: This one is really nice, save for the hot-spot on the flowers and the underexposed area on the beetle's head.
#3: This one I think it probably the coolest from an abstract point of view. Tough to meter in bright sunlight though--the top of the shell is blown out while the underside is under-exposed. If you wanted to get all fancy, you could have put a diffuser of some sort over the snail or a bounce under it.