Enhance & Uncrop JPEG for Testing

I need assistance in increasing the resolution of a JPEG image and uncropping the other. The image is intended for use as a photo for Law School Testing, so quality is key. The most important aspect of the image quality for me is sharpness. Feel free to visit this link of acceptable vs. unacceptable photos from the admissions council : https://os.lsac.org/LSAT/Register/PhotoRequirements.aspx

Ideal Skills and Experience:
- Proficiency in photo editing software
- Experience with image resolution enhancement
- Strong focus on detail and sharpness.