My two cents? Good shot. I'd try a panorama by cutting even more off the top. But then I like panoramas. Maybe a nice 16x30" or 20x40". You could even add a little bit of transparent watercolor on the foliage/moss/algae, such as Luma's Emerald Green. That way when people say "Nice B&W", you can say, "No, it's a color photo!". You will be surprised at their response.