Hi Vicki, do you only have a print?
I mean, do you have access to the original? (Digital file if it was a digital photo, or negative if it was a film photo.)
Oh!
Then you did do it right. You just shouldn't have chosen white as the color of the Solid Color layer.
Also, you have to turn off the Background layer.
Very easy to change it to white, or to any colour at all.
Just hit Cmd Opt Shift 2 (plain 2, not F2) to get marching ants, then Cmd Shift I to invert the selection, then add a Solid Color layer.
Also, can you confirm that your screens aren't mirroring each other? They must be independent screens, where you can have different things open on each one.
Hi @Momentsunleashed are you remembering that you have to use different calibration instructions for your two different screens?
https://www.damiensymonds.net/calibration-instructions/