I did it! I finished all ten puzzles from the box. Completed several days ago, actually.
I had left this one (untitled) to do last, as it looked hardest. And my guess was correct. All those lovely, soft colors make for a very difficult puzzle! I feel like I got all the sky and water in place correctly, but the trees on the sides was a different matter. Very tricky, with all those pieces the exact same shape, and the detail so random. I became tired of it in the end, knew I had a few pieces in wrong places, kept going, got far enough to count how many pieces were left (about thirty) and realized one was probably missing. Then I just didn’t care anymore. I put them in more or less the correct area, and yep, one piece short. This was one of the puzzles that hadn’t been opened in the box yet, still sealed in plastic. It’s possible I lost a piece on my bed or on the floor, but I looked carefully, shook out all the blankets, swept the floor, nothing. Oh well! Moving on.
Here’s all ten puzzles laid out on my table boards.
Assembly of the final one: