Polish Pixel Art Canvas Game

I have coded an entire browser-based game in a single HTML file using plain JavaScript and the HTML5 canvas API—no engines, frameworks, or external libraries. The core mechanics are solid, but the visuals and animations still look like programmer art... (Budget: $250 - $750 USD, Jobs: 2D Animation, 2D Game Art, ActionScript, Game Design, Game Development, HTML5, JavaScript, Pixel Art, Sprite Design, Visual Design)