Can you link the character? (you may need to post more or wait for moderation, low post count affects pictures & links)
There are tons of ways to hang a sword from a belt, many dictated more by the physical weight and length of the sword more than the style of armor/ clothing of the wearer. even non-metal swords can be cumbersome or heavy, so wait until you have it in hand before completing anything.
Basically, a sword belt is substantial and often separate or secondary to a belt that holds up ones pants. Most have a loop or holster type piece which may or may not be constructed separately from the belt itself which holds the scabbard (this is where pictures of the character help). Real swords don't hang from a belt without a scabbard, cartoon ones sometimes do.
If your sword weighs more than three pounds, invest in real leather for the belt, it's worth the cost to have it work well.