how to position text and images on page

Hello,

If you will notice on the page I link to the text on my third image is not lined up against the image as my text is next to the first image. I would prefer it to look like the first one.

Also, the image in the second container and my newsletter sign up box and donation button near the bottom are cut off on the right side of the page. How can I scoot these over a bit to the left?

http://missionimpactalliance.org/get-involved/

Thanks!!