and we are skipping highlights so everything there should be zero.
Step 3: Now we are going to add a photo filter. Go to layers - new adjustment layer - photo filter and click ok and find and click on underwater.
After Step 2 & 3 it should look like this
Step 4: Now it's time for the final step. Go to layers - new adjustment layer - selective color and click ok, a window will pop up and click on colors, select greens and then add these numbers correctly.