Hi Dan,
Welcome to OPF.
That's a fine shot of Ennerdale Water. I agree with Asher and Fahim that ideally you should crop 1/2 inch off the top, but then again I'm a sucker for a nice blue sky.
Did you walk the complete circuit of the lake? Apart from a boggy bit with nasty slippery tree roots on the left, it's a lovely walk with a nice little scramble over Angler's Crag (far left centre).
Regards,
Stuart