If you have a Youtube Channel or Vimeo where you promote your designs, share the link 
We use youtube channels, public and private to demonstrate tutorials on using our sites.
My only gripe at the moment is finding a html5 bridge for iPad devices etc.
We use Camtasia to create the Vidz and sound tracks bought from audioden for backing music.
- Sold between 100 000 and 250 000 dollars
- Author was Featured
- Won a Competition
- Has been a member for 4-5 years
- Author had a File in an Envato Bundle
- Author had a Free File of the Month
- Exclusive Author
- Australia
I upload some of my Videohive previews. Not sure how effective YouTube is in terms of generating sales though.
http://www.youtube.com/user/WebsiteDesignPerth
My channel. http://www.youtube.com/user/jackstrikergraphics 
- Sold between 100 000 and 250 000 dollars
- Won a Competition
- Author was Featured
- Item was Featured
- Author had a File in an Envato Bundle
- Exclusive Author
- Argentina
- Has been a member for 2-3 years
- Microlancer Beta Tester
- Sold between 50 000 and 100 000 dollars
- Exclusive Author
- Bought between 100 and 499 items
- Referred between 500 and 999 users
- Author had a Free File of the Month
- Author was Featured
- Item was Featured
- Europe
Youtube: http://www.youtube.com/user/aedaddy
Vimeo: http://vimeo.com/aedaddy
- Community Superstar
- Has been a member for 2-3 years
- Sold between 50 000 and 100 000 dollars
- Item was Featured
- Author was Featured
- Author had a File in an Envato Bundle
- Contributed a Tutorial to a Tuts+ Site
- Author had a Free File of the Month
vimeo: http://vimeo.com/yiannislio youtube: http://www.youtube.com/user/yiannislio
