I just finished running off 15 of my custom DT tiles, I haven’t mounted them on cardboard yet, but I really like how they look. Here is a sampling combined with some of the tiles from Original Core Set. There are a couple of alignment issues, but nothing too bad, and may be due to warping, from the lack of mounting.
Alternate beach front…
Some more… 15 custom tiles as a bridge, note: the “terrain” is all there to hold down the un-mounted tiles.