There are so many different card folding techniques around. This is a 'side step' folded card and is surprisingly easy to make.
The left side is the sentiment stamped on white card stock which is taped to a piece of black card stock. The right side carries the white and black colors on the three steps. The largest piece of white card is stamped in green with three trees. Then I stamped another piece of white with the same green trees and cut out the trees and added them with dimensionals to the first two steps. The dove was stamped in grey and added to the back piece. A little bit of glitter was added to the trees and dove.
The colors look a little faded, but in person the green looks better. I think the ink stamp needs to be reinked.
Here is a great tutorial on make a side step card.