Keep your horizons STRAIGHT (#1, #2, #3). Perfectly straight, and not leaning either way. Read up on composition, specifically the Rule of Thirds, and never put the horizon right in the middle of the shot (#1, #2, #3, #5). Shoot flowing water with a slow shutter speed to get a soft appearance to the water (#6).
The sky in #3 is completely blown out, so blown out that the transmission towers are missing sections. It would have been a good shot using the curing road as a lead-in to the subject, but it needs to be on the right side. The bike is moving out of the frame instead of into it.