PREMIERE ELEMENTS 14: Green Screen

You're much better off using a Mac but if you are using a PC and this software, then its not so difficult to apply the green screen effect...
I've embedded a how-to video below; for most things you want to do, you will be able to find how-to videos or web pages. This video has 56 seconds of initial waffle (advice on how to use a green screen, not waffle if you haven't used it yet!); go straight to 0:56 here.

You can also find a guide I did on green screening in Final Cut Pro X here.

VIDEO OPTIONS FOR GREEN SCREEN BACKGROUNDS

the following have pre-programmed a range of green screened (perfectly ironed/flattened/lit!) Xmas-themed backgrounds, or elements that can be added: snow, Xmas trees, Flash-style Santas...
Thanks to Paulina for suggesting these resources.

This user has several, such as...



There are others, such as 'Birmingham Vlogger':





And PixelBoom...



You can always search for more