Hi Dave.
#1 looks overexposed and the tree is slap bang in the middle. consider the rule of thirds.
#2 is a nothing much image, slowing the shutter speed to smooth the water is worth trying.
#3 the tree is over-lit. Perhaps a wider viewpoint might have given some more landscape.
#4 consider the composition and lighting.
#5 is somewhat better, the main rose looks in focus and well exposed. Crop the bright bit on the lhs off and it might work better.
Nothing like an upward learning curve, huh?