I'm making Autofocus look BAD…HELP us!

Have you checked and followed the Theme Documentation for using images? It looks like you need to set it to use the featured image and depending on the theme, it may automatically resize it for you.. Other than that I would just find the dimensions of each of those boxes you are placing the images in and use something like photoshop or a free image editing program to crop and scale your images to match those dimensions. I would think that this being a premium theme that it would automatically resize for you, not sure though, I didnt read over all the documentation.