The top photo has a lot of visible grain/noise. The bottom one has some, but not as much. Did you use any feature of PS
to brighten (or shadow/highlight) the photo? That can contribute. Otherwise, please provide more details about the Camera, including any manual settings (specifically ISO).
I also feel like the bottom photo has too much open space at the top. When editing, either move the subject higher up (more space at the bottom), or crop closer in to eliminate the space above.