The second one, IMO, is the best of the three. I think a polarizer would have helped cut down on the haze. There's not enough haze to make it look really mystic, but enough of it that it cuts down on the sharpness a bit.
Also, if you want a real critique, it will be necessary to see larger-sized shots.
I like the colors in the third photo as well as the way everything is arranged, makes for some fascinating shapes. I'd say that's your best one. The second is a nice nature shot, nothing about it is particularly striking and the one detractor is it's way too bright on the top of the frame. The first photo bothers me a bit, something looks off about the leaf in front, like it was purposedly placed there. Even if it just fell that way it doesn't look right, there's something inorganic about the flow.