To make the background white in Photoshop, you can follow these steps:
1. Open your photo in Photoshop in the highest resolution you have.
2. Duplicate your image layer and select the Select and Mask tool from the Select menu.
3. Choose a View Mode from the Properties panel and adjust the sliders to refine the edges of your selection.
4. Create a new layer and drag it underneath your duplicated image layer.
5. Fill the new layer with white by selecting Edit > Fill and choosing white as your fill color.
I hope that helps! Let me know if you have any other questions.
