As a matter of habit I do all of my processing in Adobe Photoshop Lightroom. However, there are cases when some additional processing needs to be performed. GIMP is a good and capable program but somehow I never got real hang of it. However PhotoScape proves to be totally different story. Although its interface is not absolutely straightforward and it lacks here and there, but when I feel like going for it, PhotoScape seems to just fit.
Here is an example of what I've done with most recent Galia's picture.
It wasn't difficult and it was fun.