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The specific steps to change camera parameters, such as auto exposure, shutter speed, and gain, will depend on the type of camera you are using. However, the following are some general guidelines that may be helpful:

1. Check your camera's user manual: The user manual for your camera should provide instructions on how to adjust its settings. It may also provide information on how to access specific settings, such as auto exposure, shutter speed, and gain.

2. Access the camera menu: Most cameras have a menu that allows you to access various settings. You may need to press a button or use a touch screen to access the menu.

3. Find the camera settings: Once you have accessed the camera menu, look for the settings related to auto exposure, shutter speed, and gain. These settings may be under different menu options depending on your camera model.

4. Adjust the camera settings: Use the camera menu to adjust the settings to your desired values. Some cameras may allow you to adjust the settings directly using buttons or dials on the camera body.

5. Test the camera settings: After adjusting the settings, test the camera to see how the changes have affected the image quality. If necessary, make further adjustments until you achieve the desired result.

It's worth noting that some cameras may have limitations on how much you can adjust the settings, particularly for automatic settings like auto exposure. In these cases, you may need to use additional equipment, such as filters or external flashes, to achieve the desired results.