Here are a few examples from last year's assessment responses:
https://www.youtube.com/watch?v=_n8lhyphs20&feature=youtu.be
https://www.youtube.com/watch?v=JL7wPBK-v5g
https://www.youtube.com/watch?v=IyikSTHuzTY
Remember that you will need to embed your videos in your blog (G7A and B) and write an overview about your video