Place the landscape photo into the current document then position the model so that it is standing on the land. Pay attention to his feet and place him on a spot where it looks correct.
Erase some areas around the bottom of his shoe so that some of the rocks appear to be behind his shoe.
Now we will repeat the previous steps to create the second and third model. Here’s some tips for cutting out the models. When you create a cutout, you may have tiny pixels left over that you may not see. To make it visible, right click on the layer, choose Blending Options, then add a 1-2px red stroke. This will show you the areas with leftover pixels that need to be erased. Once you’re done, you can remove this layer style.
After you deleted those leftover pixels, your cutout should look clean like this image.
For the fan, use the Color Range tool (Select > Color Range) to create a selection of the fan. Choose Select > Inverse then press delete to delete the background from the fan.
Same idea for the frame. Cut it out and use the technique to ensure it is properly cut out.
Put the three images together like this.
Like what you did with the first model, erase parts of the fan, foldable chair, and model so that you get results similar to the image below.
Give the fan a Poster Edges filter (Filter > Artistic > Poster Edges).
Repeat the same process for the third person in the picture. Place the picture of the fan behind the third model.
Cut out the foldable chair and place it over the fan.
Make sure the layer with the metal frame is over the fan. Then add a layer mask and use the Eraser tool to erase over parts of the frame shown in the image below.
Select the layer with the cooling fan and delete the area on the bottom.
When you’re done creating the two models, you can position them in the landscape.
Look for a stone in the landscape and duplicate it into a new layer. Move it so that it is in one of the models hand. This is to make him look like he is inspecting the stone. To make this stone stand out, use the Exposure tool (Image > Adjustments > Exposure).
Now we are going to create the oxygen meter machine on the top left of the final image. For this, I photographed a pipe from a heater.
I also used a photo of the heaters display.
Here’s how to create the oxygen box. First I placed the meter in the middle then cut out the rest of the heater and rearranged them into the box like shown in the image below. To remove the circle on the box, I just created a gradient to cover it.
To add more realism to the final image, I’ll add some pipes and tubes. For this, I photographed some gas and water pipe from my house to use the in the project.
I took this section of the pipe to put on the right side of the oxygen box. I used the Clone Stamp tool to clone out the white paint on the pipe. I also used the Clone Stamp tool to create a new shackle on the side of the oxygen box.
I photographed this washing machine hose to use on the bottom of the oxygen box. Create a cutout of the tube then place it under the spaceships oxygen meter. Use the Free Transform tool (Ctrl+T or Edit > Free Transform) to rotate the pipe.