If you have a wooden sword and want to improve its quality or performance, there are a few steps you can take:

1. Sanding and Smoothing: Begin by sanding the surface of the wooden sword with sandpaper to remove any rough edges or imperfections. This helps in creating a smoother and more comfortable grip. Be sure to sand in the direction of the grain to avoid damaging the wood.
2. Staining or Finishing: Applying a stain or finish to the wooden sword can enhance its appearance and protect the wood. You can choose a stain color that suits your preference or opt for a clear finish that allows the natural wood grain to show. Follow the manufacturer's instructions for proper application and drying times.
3. Adding Grip or Handle Wrap: If you find that the grip of the wooden sword is not comfortable or secure enough, you can add a grip or handle wrap. Materials like leather, suede, or cloth can be wrapped around the handle to improve grip and provide a more comfortable hold. Secure the wrap tightly and evenly, ensuring it doesn't interfere with the sword's balance.
4. Balance and Weight Distribution: Depending on the design and purpose of the wooden sword, you may want to adjust its balance or weight distribution. This can be achieved by carefully removing small amounts of wood from certain areas or adding weight to specific parts. Be cautious when altering the balance, as it can impact the sword's handling and performance.
5. Maintenance: Regularly maintain your wooden sword by keeping it clean and dry. Avoid exposing it to extreme temperature or humidity conditions that could cause warping or damage. Periodically inspect the sword for any cracks or splintering, and repair or replace parts as needed.

Remember that wooden swords are typically used for training, sparring, or decorative purposes and may not have the same durability or strength as metal blades. It's essential to exercise caution during use and follow proper safety guidelines to prevent injury.