That's some beautiful art! I'm almost lost for words! It just manages to bring so much impact on eyesight, especially on a black background. And the reflections really help that impact, too!
Only three things I think could help improve it just a tad more, only minor but oh well, firstly the tail looks a bit like a wing. It's very creative but I did get it confused with a wing. Secondly, she is also a little taller than normal. And lastly, her cutie mark is blue and not pink, so yep...
This is my opinion on this lovely artwork, so yeah!
This piece is absolutely amazing! It's hard to choose where to begin as I try to sum up my thoughts on this deviation. Despite the style being so completely different than the show's animation, it was immediately clear that everypony's favorite reality warper was the central focus.
Her mane and tail were exquisitely done, that despite not having the bouncing curls, they still have the volume and lightness to convey her style. I also can't get over how expertly you framed her body with water.
This is incredibly original, and the technique is stunning. I have to be ridiculously nitpicky to find anything to criticise, but if I had to give a small piece of criticism, it would be that her cutie mark seems more like Derpy Hooves/Ditzy Do's bubbles than Pinkie's balloons. As I said however, this is only a small piece of criticism and it doesn't detract from the rest of the picture at all.
Keep up the wonderful work! I can't wait to see more of your digital water art!