rhyannelise on "adding image to sidebar widget"

my site is http://www.diversifiedent.com, and I'm trying to add an "accredited by" image to the sidebar. The image is http://www.diversifiedent.com/wp-content/uploads/2013/06/CQL-Accred-color-jpeg-web-e1370353060222.jpg
but whenever I try to add it, the formatting seems to be horribly off on the website, so it looks like this: https://docs.google.com/file/d/0B1EG2yN41oZJVU5JMkhEUmJ6YmM/edit?usp=sharing