I am obsessed with perspective. When you look at a picture, and it has depth, even though you know it is flat. If the picture has greenery then so much the better. There is an artist from the 1920’s called Kolman Moser, who is very good at this. Me on the other hand I can only attempt a crude approximation. .
With more care and better use of colour I think perhaps the above, might make for a good mural painting which might make a room seam bigger than it actually is.