Hi Ross
I'm catching up a bit at the moment.
Oval, the raindrop is nice and sharp and has an interesting reflection on the surface, the rest is a bit too blurry for me.
Straight, as others have said a bit of a shoehorn, but there are straights involved. As an image, I live it, nice colours, details and the clouds look interesting.
Unattractive, again fits the theme and is messy.
Shadow, Monkey Puzzle Tree very busy image, but lots of shadows. I prefer the 2nd one, lots of implied shadows and nice bright green to the leak, nice and sharp, lots of interesting details.
Beautiful, Nice Image of the flower, ends of the petal are looking a bit soft for f8.
Pete