To make a metal file cabinet look good and fit into your space, consider the following tips:

1. Clean and Polish: Start by thoroughly cleaning the cabinet to remove any dust, dirt, or grime. Use a mild cleaner suitable for metal surfaces and a soft cloth. After cleaning, you might want to polish it with a metal polish if the surface is appropriate (e.g., stainless steel).

2. Paint or Refinish: If the cabinet has scratches, rust, or an outdated color, painting can be a great way to give it a new life. Choose a durable paint made for metal surfaces and ensure proper preparation of the surface before painting. Sanding, priming, and then applying several coats of paint will help achieve a professional look.

3. Decorative Contact Paper or Wraps: Another option is to use self-adhesive vinyl or decorative contact paper to cover the exterior of the cabinet. This can be a less permanent solution than painting and allows for easy changes in the future.

4. Add Hardware: New drawer pulls or handles can completely change the appearance of a file cabinet. Consider choosing hardware that complements your room's style, whether it’s modern, industrial, or vintage.

5. Organize the Contents: A tidy interior can contribute to how the cabinet looks when open. Use drawer dividers or labels to keep things organized and neat.

6. Placement and Accessories: Place the cabinet in an area where it contributes to the room's aesthetics rather than detracts from them. You could also place a plant on top or a small piece of artwork beside it to soften its utilitarian look.

7. Integrate into Decor: Try to match the cabinet’s color and style with other elements in the room. For example, if you have a lot of wood tones, consider painting the cabinet a coordinating color.

8. Use as a Feature: Depending on its size and shape, a file cabinet can sometimes serve as a functional side table or even as a unique bar setup. Just add a top and some accessories to make it work in your space.

By implementing one or more of these ideas, you can transform a basic metal file cabinet into a piece that enhances the overall look of your home or office.