Does anyone have a snippet for a 2-column (responsive) layout similar to the image attached below that works well within the Pook Product Announcement template?

I'm having trouble adjusting the columns in the template so that the left column is smaller (mainly holding an image) and the right column is larger (mainly holding copy). It seems the columns in the template work best when everything is centered and evenly split.

http://image.info.apa.org/lib/fe8d13727663027574/m/3/7d7151b0-7705-4930-888c-142a6af6646c.png

Thank you!!!!