This week I went skiing with my family and took a picture I thought would make a nice winter scene. I will show you how to do it in the Gimp.
I took this picture skiing and really liked the shadows on the tree. I want to isolate the tree and shadows.
First thing we can do is use the resynthesizer plugin to get rid of some of the elements of the photo. If you are unsure how to do this, check out my previous tutorial.
Use the resynthesizer plugin or clone tool to get rid of as many elements as possible.
I used separate layers to make it easier to work with the landscape and the sky.
With the sky layer, I erased everything but the sky gradient.
I used resynthesizer plugin to fill in the rest. (Note: This took FOREVER. It would probably be faster to do the gradient by hand)
I added a Gaussian blur.
At this point, I put the sky layer behind the tree I was working with, then used the eraser tool and clone tool to get rid of the elements behind the branches of the tree.
This is pretty tedious. Stick with it, or work with an easier photo.
I played with the saturation to take a lot of the color out.
Worked more with the branches.
Played more with the sky saturation to get it to match the snow more.
After flattening the image, I used the healing tool to make the transition between sky and snow seem less noticeable.
Play with the levels.
A tree with shadows.