Step1 So, the first thing to do after you have imported your photos is to you have to mask out the subjects.
Step2 Add adjustments layers to color balance and match the picture to your background.
Step3 Scale your subject to a size that matches the concept you're going for.
Step4 Add your text, always choose a font that fits your design.
Step5 Select a preset of your choice from the color lookup
Step6 Use camera raw to give your work the final touch or an overall color grading.
Step7 Hey, you are done already. Export your work and you are good to go.
I'm sorry I couldn't add the links to the pictures so you could follow along but these steps will work for pretty much any picture you'll pick. Thanks for the attention.