So here in California it hardly goes below 45 degrees, so it is pretty easy to make a warm winter coat for my kids without having to invest in goose down or heavy lining! I chose McCall's 5743 for my oldest.
The jacket pattern is unlined, so I lined it with flannel, and the outer is a charcoal fleece. As you can see, I also used bigger button and spaced them out more.
It is warm enough for our California winter, and my daughter can button it herself with the large buttons! Success!!