Editing before bed

Over the past week I've sorted through a lot of the photographs on my laptop, and stored them all on a portable hard drive. I found so many images I'd forgotten about... Mostly landscape images, so I thought I'd set myself a challenge and edit a few each night before I go to bed. Here's the latest one I played around with. It was taken on the Oban - Mull Calmac ferry last summer.

Duart Castle, Isle of Mull.