Unique Fashion Model Face Editing

I have a high-resolution photo of a model wearing one of my clothing pieces. For branding reasons, I need the model’s facial appearance altered so that the final shot carries a completely unique identity—no chance of it matching any existing or copyrighted image... (Budget: $10 - $30 USD, Jobs: Adobe Photoshop, Digital Art, Graphic Design, Image Analysis, Image Processing, Photo Editing, Photoshop, Photoshop Design)