How to Use Sharpies on Photo Paper
- 1). Place the photo on a flat surface if possible.
- 2). Write or draw on the photo applying normal pressure. It is not necessary to press down hard.
- 3). Allow the Sharpie on the photo to dry completely before touching or before placing anything on top of it. If you are in a hurry, you can wave the photo through the air a few times to aid in drying.
Source...