Hyper-realistic Photoshop for Education

I need a skilled Photoshop artist to create a hyper-realistic injury image for an educational presentation.

Requirements:
- Add large bruises on the back.
- Create a deep cut with 20 stitches.
- Make it look like a severe attack.

Ideal Skills:
- Proficiency in Adobe Photoshop.
- Experience with hyper-realistic photo manipulation.
- Strong understanding of human anatomy for realistic injury portrayal.

Please ensure the final image is convincing and suitable for an educational context. Thank you!