Add a little steam punk with area rugs

How can I redo my room without repainting it?

I'm wanting to go for more of a Victorian/steampunk look

Steampunk can only be described as the past meeting the future, so keep that in mind when decorating. You can keep the stripe on the walls if you are able to add some little extras.

Wall sconces add a Victorian feel. Add two to the wall behind your bed for reading. A big antique chandelier Throw a big area rug on your floor. Victorian homes made heavy use of area rugs, so choose one that works with your room like this Solid White area rug. With diagonal stripes on your walls, a solid area rug won't overwhelm the room.

Steampunk artwork, such as the Alice in Wonderland series by Amy Weber would look great on your walls.

Little touches would go a long way in a room like yours. Add some antique bottles from a flea market or find a cool set of old pictures with sepia tint to hang on your walls.