Making Emails Wider

I’m trying to build a new email in my campaign builder, and the email looks GREAT! Then I send myself a preview and it’s all single file column layout instead of having pictures and text side by side. I’ve tried making everything smaller on the page and that doesn’t seem to help. Does anyone know how to widen the layout so that I can have images side by side like they’re shown in the template?

The builder is relatively new. I’m pretty sure there is not a way to manage the width at this time but you might want to suggest/request that as a feature.