River scene on the CP Rail M & M Sub.
One scene that turned out fairly well on the CP Rail M & M Sub. is at Rushing River. That's where I used a calendar photo to simulate the river going off into the distance. Luckily, the green water in the photo was a good match for the green paints I had on hand, so it was relatively easy to merge the two.
Of course, it's not perfect; look at it the "wrong" way and it's pretty easy to see it's just a photo. But for normal layout viewing, it works OK. It helps that this scene is at eye-level, which means viewers aren't looking down at the river or backdrop. But even from high above, it looks fine, as in the photo below.