simple and very nice.
The edge of the snow and the water match up. Im not sure why but that jumped out at me but it did, i don't know if that's useful information :D
and as @Benevolentwanderer mentioned the grass in the shade should be darker because for me it looks like it glows .....which is a cool effect in its own right but i don't think that's what you are going for.
Keep up the good work!