Create a Curves adjustment adjustment layer to darken the jellyfish to fit the light on the background.

Step 36

Open the jellyfish 2 image and select two jellyfish in the middle to add to the right of the canvas. Change these layer mode to Screen 100% and use a layer mask on each of these layers to remove the hard edges around the jellyfish.

Create a group for these jellyfish layers and use a Hue/Saturation adjustment layer to desaturate the jellyfish a bit.

Step 37

Open the coral 2 image and use the Move Tool to drag it into the main document and place it in the bottom right of the canvas. Convert this layer to a Smart Object.

Go to Filter > Blur > Gaussian Blur and change the radius to 8 px.

Step 38

Create a Hue/Saturation adjustment layer and change the Master settings:

Make a Color Balance adjustment layer to give the coral some blue:

Add a Curves adjustment layer to darken the coral. On this layer mask, use a soft black brush with the opacity about 15-20% to paint on the left and top of the coral to reveal some light there.

Step 39

Isolate the coral 3 from the background and add it to the bottom left of the canvas and convert it to a Smart Object.  Apply a Gaussian Blur of 8 px to this layer.

Step 40

Create a Hue/Saturation adjustment layer to desaturate the coral.

Make a Color Balance adjustment layer and change the Midtones settings:

Add a Photo Filter adjustment layer and pick the color #0694ee. 

Step 41

Create a Curves adjustment layer to darken the lower/bottom of the coral. On this layer mask, use a soft black brush with the opacity about 10% to reduce the dark effect on the top.

Make another Curves adjustment layer to darken the lower of the coral more. The selected area shows where to paint on the layer mask.

Step 42

Make a new layer below the fish 3 group and use a soft brush with the color #0d1517 to paint shadow for the decoration on the forehead. 

Step 43

Create a new layer on top of the layers, change the mode to Overlay 100% and fill with 50% gray. Use the Dodge and Burn Tool to refine the light and shadow on the model's face and neck.