Creative Advert Designer For Social Media Needed! Short videos, pictures, slideshows

Looking for a designer who can help create great ads for our e-commerce store.

Looking for:
- Short videos (15-30 seconds long)
- Still picture images
- Watermarked demonstrative videos

Here is an example of something that is easy to create and makes a simple slideshow look great!

https://goo.gl/oTKeH1

Ideally I would love to find a designer who can create many ads for us and work with us for a long time. We launch new products everyday, so I need a lot of help!

Another great example of videos that I really like are these:
www.instagram.com/insiderpicks/

PS: If you create a simple 15 second ad for a fidget spinner to showcase your skills, you will have a much higher chance of being selected!