Why black&white for the first? What made you decide you wanted to present this without colours? I assume it was a colour photo to begin with and you converted it into b&w? Why?
I like the idea about a frame within the frame, making use of those trunks, but in that case the tiny corner in the upper lefthand side is distracting. And the duck has no more room to swim into (matter of timing).
The second is a bit "non-descript". The sky doesn't offer enough colour gradation, nor does enough "go on" in the sky what with that hint of a vapour trail only.