Portrait Photo Retouching and Enhancement

I have a batch of portraits that need a careful, professional touch. The priority is to refine the lighting, boost colour accuracy, and sharpen details so every face looks naturally crisp without crossing into an over-edited look... (Budget: $10 - $30 USD, Jobs: Color Grading, Digital Art, Graphic Design, Image Processing, Photo Editing, Photography, Photoshop, Photoshop Design)