Experimenting 2

Again, the scene is the medieval castle of Berkhamsted, or what is left of it, and, to the left, the gatehouse of 1865. What I am experimenting with is "sky replacement". The actual sky was boring and featureless. Now, is this an editorial 'emergency' that entitles you to take drastic steps to 'improve' the image? I wonder what people feel about it.

Done