Slider and Images

I want to make the home page have a larger image. I selected theme options> blog home page> slider as oppose to and it is showing the banner and I want the banner to have images and put in specific text I want to add in. It is showing me the blog I made, I even tried making a new page in place and adding an image and it is not working. i also tried changing it to another theme where in the sample it shows a larger image on the home screen and it doesn’t have an option for me to do so, aside from uploading an image to a blog or uploading an image to the banner and it doesn’t let it fit the image to the size of the banner.

I feel the website as is currently lacks a professional feel due to not having proper sized images. I do know however, how to add images in the blog pages itself. Does anyone have any suggestions or guidance, perhaps you are working with the same theme?

– Cathleen

The page I need help with: [log in to see the link]