For loading screens, I took the previous background image I made for the main menu screen and modified the layer styles slightly. This has an appropriate effect that matches what loading screens usually should feel like.
I also made this small graphic that goes with loading screens, to get the point across.
This is an icon for the game. I took some prior elements, like my main menu background and a cross hair, and put them together. I feel it is effective.

This piece is for the splash screen for the development team. I went for a vintage cowboy kid aesthetic.