Refine AI Challenge Coin Artwork

I have two AI-generated image in JPEG format that I need transformed into clean, production-ready artwork for a 2-inch challenge coin. The file right now has rough edges and some visual noise; your job... (Budget: $30 - $250 AUD, Jobs: Adobe Illustrator, Adobe Photoshop, AI Art Creation, Graphic Design, Illustrator, Logo Design, Photoshop, Vector Design)