Twitter card always render my images as default grey article icon

[blendaround]

**Issue: Twitter card always render my images as default grey article icon instead of my original images.
Web server is CentOs. I have no robot.txt. I’ve tried to validate card without .htaccess.
Thanks. Any help will be appreciated.

URL affected:
http://blendaround.com/javascript/eventcomparison.html

Troubleshooting steps tried already:

[andypiper]

It looks like the twitter:description tag is not closed correctly, so I suspect that the validator is not “seeing” the image tag.

[blendaround]

Thank you! I corrected it, and it works! Sorry for silly mistake, Thanks again for your support!