My autofocus was trying to decide if I wanted the icicles or the trees in the background. So I took one of the pictures with the icicles way out of focus and played with it in photoshop.
On top is the original picture with the blurred icicle. Some interesting shapes, but not a very pleasing picture.
In the middle is the same picture after playing with it in curves. I like the background here, but not the icicle.
And on the bottom, is using filters on the picture above it. I'm pretty sure I used reticulation in the sketch folder, but I can't replicate it. I get the purples, but not the greens.
In this last group, the middle picture is the original - the icicles somewhat out of focus. Again, a bit of curves help, and then back to filters. The one on the right is the posterize filter. Can't remember the one on the right.