Hi, Andy, nice one for catching up.
Overall, your photographs fit the theme but a little too processed (says me...

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First thing I said when I saw tropical was "WWWWOOOOOAAAHHHH", that's one vivid fish.
I quite like the background but may have cloned out the dark top left section.
Power, not sure about the processing, especially on the left. It's the bases that really shout power to me.
Promise has a painterly feel to it which i like and it's well framed. Was the colour in the clouds or was it 'emphasised' in pos? Nice reflections and I wouldn't have noticed the lower left and right leaves if Dawn hadn't mentioned them
Twisted, not for me, I'm afraid. I like that you're thinking differently but it looks a bit to artificial; that is, the tulips don't look real.
Cheers and looking forward to the rest of your 52...