I like
Wishing Box and
Tree of Buds best.
I would also crop Wishing Box a little if I were you so that the green speck on the left is either no longer visible or is cut in half (leaving room for imagination to think that the green speck trails off somewhere or is longer). I actually prefer Wishing box over tree of buds because it leaves more room for interpretation from the viewer. Tree of Buds merely a well taken photo, but it's just got little room for contemplation and is unremarkable.
I prefer more intelligent photography over prettiness, but that's just me. A lot of people seem to like the buds.
There is room for improvement on Moon Bridge, I think it needs more contrast and colour but I don't know whether its possible to photoshop it. I think you should have used a higher aperture when taking it so there is less blur on the leaves. If you can improve this photo I would say you should submit this instead of Wishing Box or Tree of Buds. It's got a bit more intelligence and is pretty.