Welcome to our forum!
Yes, email can be very tricky. The reason your email looks so odd in Outlook is that you have an image set to style=“width:100%;”, with a native width of 879px. Outlook will display the image at its full size, breaking tables and the layout in general to do so. If you add a width attribute to the image, Outlook will respect that setting. Float is also generally not supported. You may want to try coding the image like this:
<img src="https://gallery.mailchimp.com/26aaf930b07ec7dd9fa5f9e63/images/e0f2e72d-3c73-4b53-9c52-fda10a1841c3.jpg?_ga=1.265884109.317127946.1474288811" width="310" style="float:left;width:100%; ">
This will hep the image stay the correct size in Outlook.
You’ll find many helpful resources on our blog (https://www.emailonacid.com/blog) as well as in the Resources section of our site, under the Tips and Tricks section.
I hope that helps!