This is a test for Jetpack's Tiled Gallery.
Install Jetpack to test.
[gallery type="rectangular" columns="4" ids="755,757,758,760,766,763" orderby="rand"]
This is some text after the Tiled Gallery just to make sure that everything spaces nicely....
[wpvideo tFnqC9XQ w=680]
VideoPress, especially as a video post format, usually provides some unique styling issues.
You will need to install Jetpack or Slim Jetpack plugin to turn the shortcode into a viewable video....