I found this info from one of the AP videos on Photo repair to follow when starting to repair photo's, in this order;
1. Rotate & Crop
2. Dark & Light
3. Color Balance
4. Sharpen.
5. Corrections & Healing
D\Following these procedures as outlined above in order will help restore the photo much easier. Some of the things listed will not be necessary.
If you have questions ,please ask, & I will try to help and explain to you.
Have fun. Please show your work in the Show and Tell AP forum, we love to see your work