This is very nice Grace. You might make the waterline on the horizon straight, they usually are, and maybe some gradients of the blue to differentiate the cloud area and give some definition. Very pretty picture, I would love to see Cornwall some day.
Poppa is bound to be right about the horizon and clouds, Grace, but this is just like the coves I spent chunks of my childhood in when staying with my Cornish aunts. I like the way you've used colour to make the horizon seem so distant ... next stop Newfoundland! Nice pic. :D
drawn in 35 min
drawn in 46 min
drawn in 1 min
drawn in 6 min