Enhance AI-Generated Images Quality

I already have a batch of images that an AI tool produced. The concepts are spot-on, yet the files show typical AI artefacts—soft edges, odd textures, inconsistent lighting and limited resolution. I want each image taken to a truly professional standard so I can present them without hesitation... (Budget: $10 - $30 USD, Jobs: AI Image Editing, Digital Painting, Graphic Design, Illustrator, Image Processing, Photo Editing, Photoshop, Photoshop Design)