Is it finished, or are you going for even better? If the latter is the case, I'd suggest leaving out the fake stones (they distract, and are not really logical). Some small floating or submersed plant would do well. Give the bottom a brown murky color, with some displacement and perhaps one or two algae covered stones(sub or above surface). Also work the lake with a more patch like breeze, while the rest is (quite) very smooth. And third; separate the front swans just a bit, so they don't get glued together.
Really good job, so far!
