I think these are very peaceful shots with a good mood and like them for that. The first you will hear is that they are underexposed to light. The shadow and highlights are not balanced with the shadow being very prevalent. This is not a bad thing at all. If you like it, you should experiment with it. But, learning balanced exposure first will make you more able to control it.
I really like how the shadow of the stamens on the flowers show through the petals. And, I like the DOF.