Fileupload field and Grid

Seems there is no way to control the number of columns and our upload form is full page and at full width, you can see that for some reason the background expands, but the image doesnt and you are left with thise huge boxes. I would rather have a max size on the image and have more columns or at least have the image expand with its preview box. Has anyone else ran into this isue and came up with a better solution?