mount (something) on (something else)
To set or affix something at a higher position on something else. I was going to mount the new TV on the wall, but I actually prefer it on the table where it is now. The soldier mounted the machine gun on the rampart in preparation of the invading forces.
mount something on something
to place or attach something onto something. Mount the butterflies on plain white paper. Sue mounted her favorite stamps on a display board.