Very cute young lady fun pix. I am sure the experienced ladies and gents will chime in here but just some of my thoughts on the pictures.
My guess is these are mid afternoon shots as the lighting is the worst time of day to shoot and the harsh light on all but maybe 2 of them. So what you have is over exposed blown out highlights and a under exposed subject.The only one that has a good exposure is the last one bottom right #9. Midday harsh light is tough and with highly reflective water make it even worse.Sorry Just being honest but keep shooting and practice with exposing.