Photo Editing: Add Two People

I have a casual family photo that needs to be edited. I want two people added to the picture, using my average quality photos of them. The final product should be a digital file that doesn't look fake.

Ideal skills for this job include:
- Proficient in photo editing software like Photoshop or GIMP
- Experience with digital photo manipulation
- Attention to detail to ensure the final product looks realistic
- Ability to work with varying photo qualities

Please provide a portfolio of similar past work.