There's a warm and cheering atmosphere and a balanced setting. The black branches stand out strongly but still fit this, the little snowman is adorable and the mistletoes are a creative detail. The clothes are also well crumpled, especially boy's jeans.
I love how you color with watercolors! It looks so perfect ;D how do you do that? I want to learn it too! I colored my drawing yesterday with watercolors, but it does not look that amazing like your drawings. I am happy about how it turned out though xd anyways keep drawing and making your beautiful art ! <3