It looks more beautiful if you blog background is dark because all you know snow is white hence this looks more awesome if
your blog have dark color template.This make snow falling looks prominent.If your blog template color is whit then you
see nothing prominent.so use dark color template.
Also: Add pinterest pin it button on images
How to add snow Falling widget in blog
Adding the widget consist of two stepsFirst login to your blogger account then go to template and edit html.
After that click inside the template code area and press ctrl+f you will see new search box open.
Search this piece of code
Then paste given code above </head>
I have test this widget working fine.But If you have any problem just ask to me.