To have text wrap around an image, the image needs to be left or right aligned. Here's how to set an alignment on your image:
- In the Design step of the Campaign Builder, click edit for the content area where your image appears.

- Double click the image that you want to have text wrapped around (or right-click and choose Image Properties).
- Choose your alignment in the align drop down menu: left or right.

- Click Save & Insert Image to save your changes.
Notes
While you're editing the image properties, you'll also see options to set a top, right, bottom and left margin. Margin basically adds a virtual border around your image so that text isn't right next to the image.