Watercolor Portrait Photo Merge

I have two separate photographs—each featuring one person—and I’d like them artistically combined into a single watercolor-style portrait. The finished piece will be given as a gift, so a warm, cohesive look is essential. Please seat the subjects together in the composition (they currently appear in entirely different shots) and place them against a tasteful, simple patterned background rather than a plain wash or detailed scenery. This is a compilation for the son (high school grad) and his father (Bears jersey). The father passed away due to cancer 10 years ago. I've done similar projects for his older siblings with an artist who is no longer available.

You’ll receive the original high-resolution photo of the son as soon as we start. The photo attached here of the father is the only file copy I have. From you, I’m expecting:

• A high-resolution digital file (PNG or TIFF) suitable for printing at 16×20 inches without visible pixelation.
• A web-ready JPEG for easy sharing.
• Up to two rounds of minor color or placement tweaks so the final piece feels just right for gifting.

If you work in Procreate, Photoshop, or traditional watercolor scanned at 600 dpi, just let me know—any of those workflows is fine as long as the final output meets the size and clarity requirements.