The main way to improve tripod stability is to add mass and keep the setup low.

Most practical options:

• Hang weight from the tripod center, such as your camera bag or backpack, if the tripod has a hook or attachment point.
• If possible, attach weight low on all three legs; this can be even more stable than hanging it from the center.
• Draping a bag over one or more legs can also help.
• Lower the tripod height whenever composition allows. A lower center of gravity is more stable.
• Prefer using the upper leg sections and avoid extending the thinner lower sections if you can.

Why this helps:

• Extra mass makes the tripod less affected by wind and vibration.
• Weight placed low lowers the center of gravity, reducing the chance of tipping.

Also minimize vibration at the camera:

• Use mirror lock-up if your camera has it.
• Use a cable release or remote release instead of pressing the shutter directly.

One important caution: only add weight within the tripod’s safe load capacity. If the tripod is too light for the camera/lens combination, there is a limit to how much these tricks can help.