No matter what size I choose as an image bound, the image fills the available space. It also does not display my input text, perhaps due to lack of space? Am I doing something wrong?
You're using a skin that was moved into the "legacy bin" years ago, and whose developer hasn't been seen here in over six years. There is no support available for this skin. It's time to find something else.
Offhand, I can think of only two skins that vaguely resemble BananAlbum, in that they have no "page of thumbnails" at the beginning of the album - Lucid and Triton.