Perfect your listing before you spend a dime on ads.
1. Title Optimization
Format: [Brand] + [Main Keyword] + [Key Feature] + [Size/Color] + [UseCase].
Goal: Readability first, SEO second. Don't spam.
2. Image Gallery
Your main image must be on a pure white background (RGB 255,255,255) and occupy 85% of the frame. Use infographics for the secondary images.