High-Res Image Upscale for Mural

I need a low-resolution image of a person upscaled to high resolution for an 8x8 foot wall mural for our gym. The image must be crystal clear to avoid blurriness when printed.

Requirements:
- Only a low-resolution image is available
- Minor adjustments or enhancements are acceptable

Ideal Skills and Experience:
- Proficiency in image upscaling
- Experience with mural-quality image preparation
- Attention to detail to ensure high-quality results