Thats looking real good.
Im not crazy about the Purple Knight behind the Lysimachia. Even though they do contrast well, its still a red behind a red. Or lets say color behind a color, in an otherwise sea of green. they could be separated more. If youll notice you have a little unwanted symmetry going on. Youve done the same move with two colors, twice. Thats all your colors. Both places have the same size groups in the same shape heading the same direction
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The crypt isnt technically a color of course but it comes off as one here. Might change if you get the camera setting figured out, actualkly looks good though! And it wont look so even when the Rotala gets taller but this is the kind of symmetry and repeating of moves you want to avoid. It is also advanced critique, but its what separates a good Dutch from a great one
1. I wouldnt, like gjcarew said. And you cant use it on the other side because its too similar to the Nymphoides
2. You could scoot them closer a little bit, mostly forward. You can judge better once they get bigger. Both of those will make good curtains, eventually. Dont crop your pics though, gotta disagree on that. Because itd be obvious thats what you did to a trained judges eye
3. Speaking for a competition, you dont want any bare exposed glass. Doesnt have to be moss, can be tall plants. A thick enough curtain can hide a lot of blank space too
4. Its possible, had to adapt. I wouldnt worry about it should bounce back
5. I feel your pain lol