If you want to deal with the exposed part of the photo, you can try to use photo editing software to achieve it. The following are some commonly used image editing software and processing steps:

1.Adobe Photoshop: Open the ID photo and select Repair Brush Tool or Repair Brush Repair Tool. Use the repair brush tool to select the appropriate brush size and hardness, and then repair the exposed parts. This tool can repair defects through pixels in the sample area, making the repaired part look more natural.

2.GIMP: Open the ID photo and select the "Repair" tool. Use the repair tool to select a sample area similar to the defective area, and then repair the exposed part. The tool uses the pixel information of the sample area to repair, and can adjust the hardness and ambiguity of the repair to make the repaired part more natural.

3.PicsArt: Open the ID photo and select the "sticker" function. Search or upload a closed lip sticker in the sticker library, and then paste it on the exposed part. Adjust the size and position of the lip sticker to match the original photo. Finally, use the eraser tool or mask function to wipe off the lip paste to achieve a more natural effect.

Please note that for some countries or regions, there may be some legal and regulatory restrictions on modifying photos. Before making any changes, please make sure that you understand and abide by local laws and regulations.