This post should display a featured image, if the theme supports it.
Non-square images can provide some unique styling issues.
This post tests a horizontal featured image.
Related Post
Post Format: Image
I really love this wallpaper. It makes me think fondly of Chris Ames.
Post Format: Video (VideoPress)
[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.