From the search box enter For example, include the terms image, video, or midi in the query.
You can force its size (to differ from the default set by the user), or even provide for the reader move around in a panorama.
You can avoid image "stackups" in several ways, for example, by alternating left and right images, by aligning images, and if all else fails by forcing a break.
To avoid accidental overwriting of images or other media, generic filenames should not be used when uploading.
For example, a picture of an album cover should not be given the name File:
Files subject to any restrictions whatsoever, even "for use on Wikipedia only", may not be free enough.