See my earlier post here.
- Have the control grow vertically, rather than shrinking the images it contains
- Set horizontal alignment for images (left, right, centered)
- To make two landscape images fit on a single (portrait) page, set vertical alignment to 'top' rather than centered. Or the other way round, to fit two portrait images on a landscape page.
- And - not so important - set the initial value for Max Attachments to any value other than 1, this doesn't make sense for Multiple Feature Attachments ;-)