Robin, what a charming little stove. I probably would do something like that to just because it looks perfect for children. And thanks for the three photos.
The road on the first one definitely gave it perspective and a difference of value would bring one forward. I liked that self-portrait of Chagall too. Great depth. Unthinkable if one goes to an artist to do a portrait and he puts a plant next to your face. LOL.
Here are some of my previous attempts at doing perspective and dimensions.
I was reading a book on perspective but it didn't tell me at all how it sized the height of the people in some parts and it took me a long while to do this in trial and error. A whole 8 hour. Because it is pencil, it is obviously too detailed towards the back. If I do a color version, which I would one day, it would be a city full of these dudes and progressively, they should be less distinct.
This one I did last year. I wanted to create a network of trains but the colored pencil markings took too long and I put it in photoshop to darken. But it shows dimension.
This one I made a few slight mistakes on the values of the second and third tier in but in general, it was visibly dimensional.
This one, I learnt it from Egon Schiele. The front portions should be brighter with details and the farther it is, the darker it should be. I got a Delacroix book last night and it has a night scene too that I want to do to show this aspect also. Perhaps I'll do one tonight.
This one, perhaps if I blurred the distant hill it might be even better. The design was based on some news on Economist but I colorized it and put my lovers in.
I made this one up too. I'm not sure if the details on the viewers' left competed with the boat or not.
This one has a certain dimension but again, not sure if the lighter portion of the front on the right competes with the toadstool house.
And this one is my favorite. I created this for my kids' story.