Sig 1: 7/10 - 700k
Great highlights and shading. the text blends really nicely with all of the elements.
Sig 2: 7/10 - 700k
Everything looks good, but the spacing seems really off. the right third invites something (a statistic, a dash of text, a faded corner of a logo), and my eye keeps falling on the nicely blurred arm/net. the distress overlays are put it very subtly. the highlight flare works well with the tone of the image. great color control.
Sig 3: 8/10 - 825k
Not a clue what your foreground distress is but i really like it. in my mind its just well blended brush strokes, but the color and tone ties the player, text, and background together really well.
Sig 4: 6/10 - 600k
The text looks great render's levels look really good, but the blending of the smoke makes the whole image pretty flat, and turns that sexy 5:00 shadow into pockmarks. the smoke and melting face remind me chernobyl episode 3 (now streaming on hbo). the highlights look good andn the background fits well, but the smokiness overshadows the details.