Yes, you can edit and make any changes. My filters make over 100 changes to the photo to create that look and you are free to change any setting you want. For example, if the picture that you apply the preset to becomes too light/dark, then you can change the exposure settings. If the color is different then you can change color temp. Contrast settings are popular too. You can also change HSL (hue saturation luminance) settings, it changes how light, dark or how saturated the color is.