Demo: all layout options in one article
Each row can be Full width, or Left + right. Left and right can each be a heading, paragraph, image, video, or empty. An empty side stays empty.
1. Full width
Choose Full width when this block should use the whole row. Heading, paragraph, image and video all work here.

This paragraph is only on the left. The right side is empty on purpose — that is allowed.
This paragraph is only on the right. The left side is empty on purpose — that is allowed.

Photo on the left
This paragraph sits on the right. Any type can go here: heading, paragraph, image or video.
Photo on the right
This paragraph sits on the left. The image is on the right.

Film on the left
The clip is on the left; this copy is on the right.