haha, finally see your photos production, nice set you have..

my commends:

chapter 3
#1-sky over exposed, for long exposure, better don't include too much of bright sky, like the #2 is good.
#3 & #4-bit out of focus, bump up ISO to obtain faster shutter speed or uses bounce flash.

chapter 2
#3-i like this, nice composition.

chapter 1
i like all of them, just need more skill to manipulate your flash and understand WB.