I'm editing a picture of two lions lying, with their manes in the wind. I have converted it to an .PNG file, to be able to have an alpha channel. Now I'm trying to remove the blue sky while retaining as much as possible of their manes. As you can see, I did a portion on the right side, just by using a small brush. But there is still a blue-ish glow to it. Now I was wondering if there's a better approach to this? Any help very much appreciated!