We have got here huge land of 34 acres of area amidst the tall tress, lake & winter landscape. So, the main focus of the design is not only the cottage, but the environment around it. I would like to say its a kind of micro climate which environs the cottage.
Since you are well satisfied with the layout (which you the provided), so no changes have been made into it. Only a bay window is proposed on the front wall.
Instead main focus is on the landscaping and the approach of how to give it a "Maine Cottage" feel.
There is a main driveway with concrete grass crate pavers which connects the garage with the site entrance.
A sitting space with pergola is proposed outside the cottage.
A water body is proposed with stones / boulders around it. Use of stones and water will provide a natural environment to cottage. But, I am not sure about the feasibility of providing a water body due to winter climate. So, that is your call basically.
Seating spaces, plants along the path, green areas, trees etc. adds to the beauty of the house.