The tree infrared one is awesome, but the remainder of the firsts weren't better than yours IMO.
Your strongest ones are the beach walkway, the footprints in the sand, the waterfall thing (what is that btw?) and the sailboat. I think you have a better eye for cropping/zooming than I do. I always wanna get as much in a shot as I can...
Congratulations again. Was there a portrait category or was it just general? Some of those engagement pics would've been great.