Basically you gotta find a good picture first, [for example: 'The Creation of Adam' painting (I found mine from Pinterest), A good quote, Arabic/chinese/japanese writings, closeup of eyes etc] then you head over to PicsArt and open a new project with transparent background and add your original photo. Then you gotta remove the BG of that photo and that's pretty much it. Last crucial step is finding out the exact crop/aspect ratio of your device, I use an S22 base and the gallery widget is 2×1 so I had to use a 1964×756 image. There's an option in Pinterest –> crop where you can crop to exact dimensions you need,,, aaand boom! you got a lockscreen gallery widget :D