A cafeteria photo with Heidi. This was light with one strobe with small softbox on camera left. The strobe was tilted a bit pass and up from model (tethered light).
I edited this mostly with LR, because I suck with photoshop. But I made two virtual copies of this photo that I edited first for model and the second for background. Then I stacked the copies in photoshop and masked it, so that the result was compelety changed backround color and light.